20954700

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:238

約数の個数: 180

約数和(自身を含む): 73519600

約数和(自身を除く): 52564900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 25, 26, 27, 30, 36, 39, 45, 50, 52, 54, 60, 65, 75, 78, 81, 90, 100, 108, 117, 130, 135, 150, 156, 162, 180, 195, 199, 225, 234, 260, 270, 300, 324, 325, 351, 390, 398, 405, 450, 468, 540, 585, 597, 650, 675, 702, 780, 796, 810, 900, 975, 995, 1053, 1170, 1194, 1300, 1350, 1404, 1620, 1755, 1791, 1950, 1990, 2025, 2106, 2340, 2388, 2587, 2700, 2925, 2985, 3510, 3582, 3900, 3980, 4050, 4212, 4975, 5174, 5265, 5373, 5850, 5970, 7020, 7164, 7761, 8100, 8775, 8955, 9950, 10348, 10530, 10746, 11700, 11940, 12935, 14925, 15522, 16119, 17550, 17910, 19900, 21060, 21492, 23283, 25870, 26325, 26865, 29850, 31044, 32238, 35100, 35820, 38805, 44775, 46566, 51740, 52650, 53730, 59700, 64476, 64675, 69849, 77610, 80595, 89550, 93132, 105300, 107460, 116415, 129350, 134325, 139698, 155220, 161190, 179100, 194025, 209547, 232830, 258700, 268650, 279396, 322380, 349245, 388050, 402975, 419094, 465660, 537300, 582075, 698490, 776100, 805950, 838188, 1047735, 1164150, 1396980, 1611900, 1746225, 2095470, 2328300, 3492450, 4190940, 5238675, 6984900, 10477350, 20954700]

約数ペア:

[(1, 20954700), (2, 10477350), (3, 6984900), (4, 5238675), (5, 4190940), (6, 3492450), (9, 2328300), (10, 2095470), (12, 1746225), (13, 1611900), (15, 1396980), (18, 1164150), (20, 1047735), (25, 838188), (26, 805950), (27, 776100), (30, 698490), (36, 582075), (39, 537300), (45, 465660), (50, 419094), (52, 402975), (54, 388050), (60, 349245), (65, 322380), (75, 279396), (78, 268650), (81, 258700), (90, 232830), (100, 209547), (108, 194025), (117, 179100), (130, 161190), (135, 155220), (150, 139698), (156, 134325), (162, 129350), (180, 116415), (195, 107460), (199, 105300), (225, 93132), (234, 89550), (260, 80595), (270, 77610), (300, 69849), (324, 64675), (325, 64476), (351, 59700), (390, 53730), (398, 52650), (405, 51740), (450, 46566), (468, 44775), (540, 38805), (585, 35820), (597, 35100), (650, 32238), (675, 31044), (702, 29850), (780, 26865), (796, 26325), (810, 25870), (900, 23283), (975, 21492), (995, 21060), (1053, 19900), (1170, 17910), (1194, 17550), (1300, 16119), (1350, 15522), (1404, 14925), (1620, 12935), (1755, 11940), (1791, 11700), (1950, 10746), (1990, 10530), (2025, 10348), (2106, 9950), (2340, 8955), (2388, 8775), (2587, 8100), (2700, 7761), (2925, 7164), (2985, 7020), (3510, 5970), (3582, 5850), (3900, 5373), (3980, 5265), (4050, 5174), (4212, 4975)]