20359540

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{233}}^1\times {\mathrm{257}}^1$

素因数の和:516

約数の個数: 48

約数和(自身を含む): 45641232

約数和(自身を除く): 25281692

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 233, 257, 340, 466, 514, 932, 1028, 1165, 1285, 2330, 2570, 3961, 4369, 4660, 5140, 7922, 8738, 15844, 17476, 19805, 21845, 39610, 43690, 59881, 79220, 87380, 119762, 239524, 299405, 598810, 1017977, 1197620, 2035954, 4071908, 5089885, 10179770, 20359540]

約数ペア:

[(1, 20359540), (2, 10179770), (4, 5089885), (5, 4071908), (10, 2035954), (17, 1197620), (20, 1017977), (34, 598810), (68, 299405), (85, 239524), (170, 119762), (233, 87380), (257, 79220), (340, 59881), (466, 43690), (514, 39610), (932, 21845), (1028, 19805), (1165, 17476), (1285, 15844), (2330, 8738), (2570, 7922), (3961, 5140), (4369, 4660)]