20517770

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{3221}}^1$

素因数の和:3255

約数の個数: 48

約数和(自身を含む): 46280808

約数和(自身を除く): 25763038

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 49, 65, 70, 91, 98, 130, 182, 245, 455, 490, 637, 910, 1274, 3185, 3221, 6370, 6442, 16105, 22547, 32210, 41873, 45094, 83746, 112735, 157829, 209365, 225470, 293111, 315658, 418730, 586222, 789145, 1465555, 1578290, 2051777, 2931110, 4103554, 10258885, 20517770]

約数ペア:

[(1, 20517770), (2, 10258885), (5, 4103554), (7, 2931110), (10, 2051777), (13, 1578290), (14, 1465555), (26, 789145), (35, 586222), (49, 418730), (65, 315658), (70, 293111), (91, 225470), (98, 209365), (130, 157829), (182, 112735), (245, 83746), (455, 45094), (490, 41873), (637, 32210), (910, 22547), (1274, 16105), (3185, 6442), (3221, 6370)]