20715450

素因数分解:

$2^1\times 3^1\times 5^2\times 7^1\times {\mathrm{109}}^1\times {\mathrm{181}}^1$

素因数の和:312

約数の個数: 96

約数和(自身を含む): 59579520

約数和(自身を除く): 38864070

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 25, 30, 35, 42, 50, 70, 75, 105, 109, 150, 175, 181, 210, 218, 327, 350, 362, 525, 543, 545, 654, 763, 905, 1050, 1086, 1090, 1267, 1526, 1635, 1810, 2289, 2534, 2715, 2725, 3270, 3801, 3815, 4525, 4578, 5430, 5450, 6335, 7602, 7630, 8175, 9050, 11445, 12670, 13575, 16350, 19005, 19075, 19729, 22890, 27150, 31675, 38010, 38150, 39458, 57225, 59187, 63350, 95025, 98645, 114450, 118374, 138103, 190050, 197290, 276206, 295935, 414309, 493225, 591870, 690515, 828618, 986450, 1381030, 1479675, 2071545, 2959350, 3452575, 4143090, 6905150, 10357725, 20715450]

約数ペア:

[(1, 20715450), (2, 10357725), (3, 6905150), (5, 4143090), (6, 3452575), (7, 2959350), (10, 2071545), (14, 1479675), (15, 1381030), (21, 986450), (25, 828618), (30, 690515), (35, 591870), (42, 493225), (50, 414309), (70, 295935), (75, 276206), (105, 197290), (109, 190050), (150, 138103), (175, 118374), (181, 114450), (210, 98645), (218, 95025), (327, 63350), (350, 59187), (362, 57225), (525, 39458), (543, 38150), (545, 38010), (654, 31675), (763, 27150), (905, 22890), (1050, 19729), (1086, 19075), (1090, 19005), (1267, 16350), (1526, 13575), (1635, 12670), (1810, 11445), (2289, 9050), (2534, 8175), (2715, 7630), (2725, 7602), (3270, 6335), (3801, 5450), (3815, 5430), (4525, 4578)]