20205900

素因数分解:

$2^2\times 3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:201

約数の個数: 216

約数和(自身を含む): 74880624

約数和(自身を除く): 54674724

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 13, 15, 18, 20, 22, 25, 26, 30, 33, 36, 39, 44, 45, 50, 52, 55, 60, 65, 66, 75, 78, 90, 99, 100, 110, 117, 130, 132, 143, 150, 156, 157, 165, 180, 195, 198, 220, 225, 234, 260, 275, 286, 300, 314, 325, 330, 390, 396, 429, 450, 468, 471, 495, 550, 572, 585, 628, 650, 660, 715, 780, 785, 825, 858, 900, 942, 975, 990, 1100, 1170, 1287, 1300, 1413, 1430, 1570, 1650, 1716, 1727, 1884, 1950, 1980, 2041, 2145, 2340, 2355, 2475, 2574, 2826, 2860, 2925, 3140, 3300, 3454, 3575, 3900, 3925, 4082, 4290, 4710, 4950, 5148, 5181, 5652, 5850, 6123, 6435, 6908, 7065, 7150, 7850, 8164, 8580, 8635, 9420, 9900, 10205, 10362, 10725, 11700, 11775, 12246, 12870, 14130, 14300, 15543, 15700, 17270, 18369, 20410, 20724, 21450, 22451, 23550, 24492, 25740, 25905, 28260, 30615, 31086, 32175, 34540, 35325, 36738, 40820, 42900, 43175, 44902, 47100, 51025, 51810, 61230, 62172, 64350, 67353, 70650, 73476, 77715, 86350, 89804, 91845, 102050, 103620, 112255, 122460, 128700, 129525, 134706, 141300, 153075, 155430, 172700, 183690, 202059, 204100, 224510, 259050, 269412, 306150, 310860, 336765, 367380, 388575, 404118, 449020, 459225, 518100, 561275, 612300, 673530, 777150, 808236, 918450, 1010295, 1122550, 1347060, 1554300, 1683825, 1836900, 2020590, 2245100, 3367650, 4041180, 5051475, 6735300, 10102950, 20205900]

約数ペア:

[(1, 20205900), (2, 10102950), (3, 6735300), (4, 5051475), (5, 4041180), (6, 3367650), (9, 2245100), (10, 2020590), (11, 1836900), (12, 1683825), (13, 1554300), (15, 1347060), (18, 1122550), (20, 1010295), (22, 918450), (25, 808236), (26, 777150), (30, 673530), (33, 612300), (36, 561275), (39, 518100), (44, 459225), (45, 449020), (50, 404118), (52, 388575), (55, 367380), (60, 336765), (65, 310860), (66, 306150), (75, 269412), (78, 259050), (90, 224510), (99, 204100), (100, 202059), (110, 183690), (117, 172700), (130, 155430), (132, 153075), (143, 141300), (150, 134706), (156, 129525), (157, 128700), (165, 122460), (180, 112255), (195, 103620), (198, 102050), (220, 91845), (225, 89804), (234, 86350), (260, 77715), (275, 73476), (286, 70650), (300, 67353), (314, 64350), (325, 62172), (330, 61230), (390, 51810), (396, 51025), (429, 47100), (450, 44902), (468, 43175), (471, 42900), (495, 40820), (550, 36738), (572, 35325), (585, 34540), (628, 32175), (650, 31086), (660, 30615), (715, 28260), (780, 25905), (785, 25740), (825, 24492), (858, 23550), (900, 22451), (942, 21450), (975, 20724), (990, 20410), (1100, 18369), (1170, 17270), (1287, 15700), (1300, 15543), (1413, 14300), (1430, 14130), (1570, 12870), (1650, 12246), (1716, 11775), (1727, 11700), (1884, 10725), (1950, 10362), (1980, 10205), (2041, 9900), (2145, 9420), (2340, 8635), (2355, 8580), (2475, 8164), (2574, 7850), (2826, 7150), (2860, 7065), (2925, 6908), (3140, 6435), (3300, 6123), (3454, 5850), (3575, 5652), (3900, 5181), (3925, 5148), (4082, 4950), (4290, 4710)]