20218470

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{79}}^1\times {\mathrm{449}}^1$

素因数の和:557

約数の個数: 64

約数和(自身を含む): 51840000

約数和(自身を除く): 31621530

約数列:

[1, 2, 3, 5, 6, 10, 15, 19, 30, 38, 57, 79, 95, 114, 158, 190, 237, 285, 395, 449, 474, 570, 790, 898, 1185, 1347, 1501, 2245, 2370, 2694, 3002, 4490, 4503, 6735, 7505, 8531, 9006, 13470, 15010, 17062, 22515, 25593, 35471, 42655, 45030, 51186, 70942, 85310, 106413, 127965, 177355, 212826, 255930, 354710, 532065, 673949, 1064130, 1347898, 2021847, 3369745, 4043694, 6739490, 10109235, 20218470]

約数ペア:

[(1, 20218470), (2, 10109235), (3, 6739490), (5, 4043694), (6, 3369745), (10, 2021847), (15, 1347898), (19, 1064130), (30, 673949), (38, 532065), (57, 354710), (79, 255930), (95, 212826), (114, 177355), (158, 127965), (190, 106413), (237, 85310), (285, 70942), (395, 51186), (449, 45030), (474, 42655), (570, 35471), (790, 25593), (898, 22515), (1185, 17062), (1347, 15010), (1501, 13470), (2245, 9006), (2370, 8531), (2694, 7505), (3002, 6735), (4490, 4503)]