289444520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{233423}}^1$

素因数の和:233465

約数の個数: 32

約数和(自身を含む): 672261120

約数和(自身を除く): 382816600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 233423, 466846, 933692, 1167115, 1867384, 2334230, 4668460, 7236113, 9336920, 14472226, 28944452, 36180565, 57888904, 72361130, 144722260, 289444520]

約数ペア:

[(1, 289444520), (2, 144722260), (4, 72361130), (5, 57888904), (8, 36180565), (10, 28944452), (20, 14472226), (31, 9336920), (40, 7236113), (62, 4668460), (124, 2334230), (155, 1867384), (248, 1167115), (310, 933692), (620, 466846), (1240, 233423)]