87402020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{2311}}^1$

素因数の和:2412

約数の個数: 48

約数和(自身を含む): 192654336

約数和(自身を除く): 105252316

約数列:

[1, 2, 4, 5, 10, 20, 31, 61, 62, 122, 124, 155, 244, 305, 310, 610, 620, 1220, 1891, 2311, 3782, 4622, 7564, 9244, 9455, 11555, 18910, 23110, 37820, 46220, 71641, 140971, 143282, 281942, 286564, 358205, 563884, 704855, 716410, 1409710, 1432820, 2819420, 4370101, 8740202, 17480404, 21850505, 43701010, 87402020]

約数ペア:

[(1, 87402020), (2, 43701010), (4, 21850505), (5, 17480404), (10, 8740202), (20, 4370101), (31, 2819420), (61, 1432820), (62, 1409710), (122, 716410), (124, 704855), (155, 563884), (244, 358205), (305, 286564), (310, 281942), (610, 143282), (620, 140971), (1220, 71641), (1891, 46220), (2311, 37820), (3782, 23110), (4622, 18910), (7564, 11555), (9244, 9455)]