28918040

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{23321}}^1$

素因数の和:23363

約数の個数: 32

約数和(自身を含む): 67167360

約数和(自身を除く): 38249320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 23321, 46642, 93284, 116605, 186568, 233210, 466420, 722951, 932840, 1445902, 2891804, 3614755, 5783608, 7229510, 14459020, 28918040]

約数ペア:

[(1, 28918040), (2, 14459020), (4, 7229510), (5, 5783608), (8, 3614755), (10, 2891804), (20, 1445902), (31, 932840), (40, 722951), (62, 466420), (124, 233210), (155, 186568), (248, 116605), (310, 93284), (620, 46642), (1240, 23321)]