289389880

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{556519}}^1$

素因数の和:556543

約数の個数: 32

約数和(自身を含む): 701215200

約数和(自身を除く): 411825320

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 556519, 1113038, 2226076, 2782595, 4452152, 5565190, 7234747, 11130380, 14469494, 22260760, 28938988, 36173735, 57877976, 72347470, 144694940, 289389880]

約数ペア:

[(1, 289389880), (2, 144694940), (4, 72347470), (5, 57877976), (8, 36173735), (10, 28938988), (13, 22260760), (20, 14469494), (26, 11130380), (40, 7234747), (52, 5565190), (65, 4452152), (104, 2782595), (130, 2226076), (260, 1113038), (520, 556519)]