1398280

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{2689}}^1$

素因数の和:2713

約数の個数: 32

約数和(自身を含む): 3389400

約数和(自身を除く): 1991120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 2689, 5378, 10756, 13445, 21512, 26890, 34957, 53780, 69914, 107560, 139828, 174785, 279656, 349570, 699140, 1398280]

約数ペア:

[(1, 1398280), (2, 699140), (4, 349570), (5, 279656), (8, 174785), (10, 139828), (13, 107560), (20, 69914), (26, 53780), (40, 34957), (52, 26890), (65, 21512), (104, 13445), (130, 10756), (260, 5378), (520, 2689)]