18553990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{20389}}^1$

素因数の和:20416

約数の個数: 32

約数和(自身を含む): 41106240

約数和(自身を除く): 22552250

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 20389, 40778, 101945, 142723, 203890, 265057, 285446, 530114, 713615, 1325285, 1427230, 1855399, 2650570, 3710798, 9276995, 18553990]

約数ペア:

[(1, 18553990), (2, 9276995), (5, 3710798), (7, 2650570), (10, 1855399), (13, 1427230), (14, 1325285), (26, 713615), (35, 530114), (65, 285446), (70, 265057), (91, 203890), (130, 142723), (182, 101945), (455, 40778), (910, 20389)]