201725140

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{149}}^1\times {\mathrm{487}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 430416000

約数和(自身を除く): 228690860

約数列:

[1, 2, 4, 5, 10, 20, 139, 149, 278, 298, 487, 556, 596, 695, 745, 974, 1390, 1490, 1948, 2435, 2780, 2980, 4870, 9740, 20711, 41422, 67693, 72563, 82844, 103555, 135386, 145126, 207110, 270772, 290252, 338465, 362815, 414220, 676930, 725630, 1353860, 1451260, 10086257, 20172514, 40345028, 50431285, 100862570, 201725140]

約数ペア:

[(1, 201725140), (2, 100862570), (4, 50431285), (5, 40345028), (10, 20172514), (20, 10086257), (139, 1451260), (149, 1353860), (278, 725630), (298, 676930), (487, 414220), (556, 362815), (596, 338465), (695, 290252), (745, 270772), (974, 207110), (1390, 145126), (1490, 135386), (1948, 103555), (2435, 82844), (2780, 72563), (2980, 67693), (4870, 41422), (9740, 20711)]