28056990

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{71941}}^1$

素因数の和:71964

約数の個数: 32

約数和(自身を含む): 72517536

約数和(自身を除く): 44460546

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 71941, 143882, 215823, 359705, 431646, 719410, 935233, 1079115, 1870466, 2158230, 2805699, 4676165, 5611398, 9352330, 14028495, 28056990]

約数ペア:

[(1, 28056990), (2, 14028495), (3, 9352330), (5, 5611398), (6, 4676165), (10, 2805699), (13, 2158230), (15, 1870466), (26, 1079115), (30, 935233), (39, 719410), (65, 431646), (78, 359705), (130, 215823), (195, 143882), (390, 71941)]