20439864

素因数分解:

$2^3\times 3^4\times {\mathrm{31543}}^1$

素因数の和:31561

約数の個数: 40

約数和(自身を含む): 57252360

約数和(自身を除く): 36812496

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 31543, 63086, 94629, 126172, 189258, 252344, 283887, 378516, 567774, 757032, 851661, 1135548, 1703322, 2271096, 2554983, 3406644, 5109966, 6813288, 10219932, 20439864]

約数ペア:

[(1, 20439864), (2, 10219932), (3, 6813288), (4, 5109966), (6, 3406644), (8, 2554983), (9, 2271096), (12, 1703322), (18, 1135548), (24, 851661), (27, 757032), (36, 567774), (54, 378516), (72, 283887), (81, 252344), (108, 189258), (162, 126172), (216, 94629), (324, 63086), (648, 31543)]