19782050

素因数分解:

$2^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{37}}^2$

素因数の和:120

約数の個数: 54

約数和(自身を含む): 40171257

約数和(自身を除く): 20389207

約数列:

[1, 2, 5, 10, 17, 25, 34, 37, 50, 74, 85, 170, 185, 289, 370, 425, 578, 629, 850, 925, 1258, 1369, 1445, 1850, 2738, 2890, 3145, 6290, 6845, 7225, 10693, 13690, 14450, 15725, 21386, 23273, 31450, 34225, 46546, 53465, 68450, 106930, 116365, 232730, 267325, 395641, 534650, 581825, 791282, 1163650, 1978205, 3956410, 9891025, 19782050]

約数ペア:

[(1, 19782050), (2, 9891025), (5, 3956410), (10, 1978205), (17, 1163650), (25, 791282), (34, 581825), (37, 534650), (50, 395641), (74, 267325), (85, 232730), (170, 116365), (185, 106930), (289, 68450), (370, 53465), (425, 46546), (578, 34225), (629, 31450), (850, 23273), (925, 21386), (1258, 15725), (1369, 14450), (1445, 13690), (1850, 10693), (2738, 7225), (2890, 6845), (3145, 6290)]