20958750

素因数分解:

$2^1\times 3^6\times 5^4\times {\mathrm{23}}^1$

素因数の和:63

約数の個数: 140

約数和(自身を含む): 61461576

約数和(自身を除く): 40502826

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 23, 25, 27, 30, 45, 46, 50, 54, 69, 75, 81, 90, 115, 125, 135, 138, 150, 162, 207, 225, 230, 243, 250, 270, 345, 375, 405, 414, 450, 486, 575, 621, 625, 675, 690, 729, 750, 810, 1035, 1125, 1150, 1215, 1242, 1250, 1350, 1458, 1725, 1863, 1875, 2025, 2070, 2250, 2430, 2875, 3105, 3375, 3450, 3645, 3726, 3750, 4050, 5175, 5589, 5625, 5750, 6075, 6210, 6750, 7290, 8625, 9315, 10125, 10350, 11178, 11250, 12150, 14375, 15525, 16767, 16875, 17250, 18225, 18630, 20250, 25875, 27945, 28750, 30375, 31050, 33534, 33750, 36450, 43125, 46575, 50625, 51750, 55890, 60750, 77625, 83835, 86250, 91125, 93150, 101250, 129375, 139725, 151875, 155250, 167670, 182250, 232875, 258750, 279450, 303750, 388125, 419175, 455625, 465750, 698625, 776250, 838350, 911250, 1164375, 1397250, 2095875, 2328750, 3493125, 4191750, 6986250, 10479375, 20958750]

約数ペア:

[(1, 20958750), (2, 10479375), (3, 6986250), (5, 4191750), (6, 3493125), (9, 2328750), (10, 2095875), (15, 1397250), (18, 1164375), (23, 911250), (25, 838350), (27, 776250), (30, 698625), (45, 465750), (46, 455625), (50, 419175), (54, 388125), (69, 303750), (75, 279450), (81, 258750), (90, 232875), (115, 182250), (125, 167670), (135, 155250), (138, 151875), (150, 139725), (162, 129375), (207, 101250), (225, 93150), (230, 91125), (243, 86250), (250, 83835), (270, 77625), (345, 60750), (375, 55890), (405, 51750), (414, 50625), (450, 46575), (486, 43125), (575, 36450), (621, 33750), (625, 33534), (675, 31050), (690, 30375), (729, 28750), (750, 27945), (810, 25875), (1035, 20250), (1125, 18630), (1150, 18225), (1215, 17250), (1242, 16875), (1250, 16767), (1350, 15525), (1458, 14375), (1725, 12150), (1863, 11250), (1875, 11178), (2025, 10350), (2070, 10125), (2250, 9315), (2430, 8625), (2875, 7290), (3105, 6750), (3375, 6210), (3450, 6075), (3645, 5750), (3726, 5625), (3750, 5589), (4050, 5175)]