20428200

素因数分解:

$2^3\times 3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{97}}^1$

素因数の和:138

約数の個数: 240

約数和(自身を含む): 77195580

約数和(自身を除く): 56767380

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 25, 26, 27, 30, 36, 39, 40, 45, 50, 52, 54, 60, 65, 72, 75, 78, 81, 90, 97, 100, 104, 108, 117, 120, 130, 135, 150, 156, 162, 180, 194, 195, 200, 216, 225, 234, 260, 270, 291, 300, 312, 324, 325, 351, 360, 388, 390, 405, 450, 468, 485, 520, 540, 582, 585, 600, 648, 650, 675, 702, 776, 780, 810, 873, 900, 936, 970, 975, 1053, 1080, 1164, 1170, 1261, 1300, 1350, 1404, 1455, 1560, 1620, 1746, 1755, 1800, 1940, 1950, 2025, 2106, 2328, 2340, 2425, 2522, 2600, 2619, 2700, 2808, 2910, 2925, 3240, 3492, 3510, 3783, 3880, 3900, 4050, 4212, 4365, 4680, 4850, 5044, 5238, 5265, 5400, 5820, 5850, 6305, 6984, 7020, 7275, 7566, 7800, 7857, 8100, 8424, 8730, 8775, 9700, 10088, 10476, 10530, 11349, 11640, 11700, 12610, 13095, 14040, 14550, 15132, 15714, 16200, 17460, 17550, 18915, 19400, 20952, 21060, 21825, 22698, 23400, 25220, 26190, 26325, 29100, 30264, 31428, 31525, 34047, 34920, 35100, 37830, 39285, 42120, 43650, 45396, 50440, 52380, 52650, 56745, 58200, 62856, 63050, 65475, 68094, 70200, 75660, 78570, 87300, 90792, 94575, 102141, 104760, 105300, 113490, 126100, 130950, 136188, 151320, 157140, 170235, 174600, 189150, 196425, 204282, 210600, 226980, 252200, 261900, 272376, 283725, 314280, 340470, 378300, 392850, 408564, 453960, 510705, 523800, 567450, 680940, 756600, 785700, 817128, 851175, 1021410, 1134900, 1361880, 1571400, 1702350, 2042820, 2269800, 2553525, 3404700, 4085640, 5107050, 6809400, 10214100, 20428200]

約数ペア:

[(1, 20428200), (2, 10214100), (3, 6809400), (4, 5107050), (5, 4085640), (6, 3404700), (8, 2553525), (9, 2269800), (10, 2042820), (12, 1702350), (13, 1571400), (15, 1361880), (18, 1134900), (20, 1021410), (24, 851175), (25, 817128), (26, 785700), (27, 756600), (30, 680940), (36, 567450), (39, 523800), (40, 510705), (45, 453960), (50, 408564), (52, 392850), (54, 378300), (60, 340470), (65, 314280), (72, 283725), (75, 272376), (78, 261900), (81, 252200), (90, 226980), (97, 210600), (100, 204282), (104, 196425), (108, 189150), (117, 174600), (120, 170235), (130, 157140), (135, 151320), (150, 136188), (156, 130950), (162, 126100), (180, 113490), (194, 105300), (195, 104760), (200, 102141), (216, 94575), (225, 90792), (234, 87300), (260, 78570), (270, 75660), (291, 70200), (300, 68094), (312, 65475), (324, 63050), (325, 62856), (351, 58200), (360, 56745), (388, 52650), (390, 52380), (405, 50440), (450, 45396), (468, 43650), (485, 42120), (520, 39285), (540, 37830), (582, 35100), (585, 34920), (600, 34047), (648, 31525), (650, 31428), (675, 30264), (702, 29100), (776, 26325), (780, 26190), (810, 25220), (873, 23400), (900, 22698), (936, 21825), (970, 21060), (975, 20952), (1053, 19400), (1080, 18915), (1164, 17550), (1170, 17460), (1261, 16200), (1300, 15714), (1350, 15132), (1404, 14550), (1455, 14040), (1560, 13095), (1620, 12610), (1746, 11700), (1755, 11640), (1800, 11349), (1940, 10530), (1950, 10476), (2025, 10088), (2106, 9700), (2328, 8775), (2340, 8730), (2425, 8424), (2522, 8100), (2600, 7857), (2619, 7800), (2700, 7566), (2808, 7275), (2910, 7020), (2925, 6984), (3240, 6305), (3492, 5850), (3510, 5820), (3783, 5400), (3880, 5265), (3900, 5238), (4050, 5044), (4212, 4850), (4365, 4680)]