20272525

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{67}}^1$

素因数の和:123

約数の個数: 72

約数和(自身を含む): 33643680

約数和(自身を除く): 13371155

約数列:

[1, 5, 7, 13, 19, 25, 35, 49, 65, 67, 91, 95, 133, 175, 245, 247, 325, 335, 455, 469, 475, 637, 665, 871, 931, 1225, 1235, 1273, 1675, 1729, 2275, 2345, 3185, 3283, 3325, 4355, 4655, 6097, 6175, 6365, 8645, 8911, 11725, 12103, 15925, 16415, 16549, 21775, 23275, 30485, 31825, 42679, 43225, 44555, 60515, 62377, 82075, 82745, 115843, 152425, 213395, 222775, 302575, 311885, 413725, 579215, 810901, 1066975, 1559425, 2896075, 4054505, 20272525]

約数ペア:

[(1, 20272525), (5, 4054505), (7, 2896075), (13, 1559425), (19, 1066975), (25, 810901), (35, 579215), (49, 413725), (65, 311885), (67, 302575), (91, 222775), (95, 213395), (133, 152425), (175, 115843), (245, 82745), (247, 82075), (325, 62377), (335, 60515), (455, 44555), (469, 43225), (475, 42679), (637, 31825), (665, 30485), (871, 23275), (931, 21775), (1225, 16549), (1235, 16415), (1273, 15925), (1675, 12103), (1729, 11725), (2275, 8911), (2345, 8645), (3185, 6365), (3283, 6175), (3325, 6097), (4355, 4655)]