2857820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:302

約数の個数: 48

約数和(自身を含む): 6955200

約数和(自身を除く): 4097380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 149, 274, 298, 548, 596, 685, 745, 959, 1043, 1370, 1490, 1918, 2086, 2740, 2980, 3836, 4172, 4795, 5215, 9590, 10430, 19180, 20413, 20860, 40826, 81652, 102065, 142891, 204130, 285782, 408260, 571564, 714455, 1428910, 2857820]

約数ペア:

[(1, 2857820), (2, 1428910), (4, 714455), (5, 571564), (7, 408260), (10, 285782), (14, 204130), (20, 142891), (28, 102065), (35, 81652), (70, 40826), (137, 20860), (140, 20413), (149, 19180), (274, 10430), (298, 9590), (548, 5215), (596, 4795), (685, 4172), (745, 3836), (959, 2980), (1043, 2740), (1370, 2086), (1490, 1918)]