861220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{149}}^1$

素因数の和:192

約数の個数: 36

約数和(自身を含む): 1934100

約数和(自身を除く): 1072880

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 149, 170, 289, 298, 340, 578, 596, 745, 1156, 1445, 1490, 2533, 2890, 2980, 5066, 5780, 10132, 12665, 25330, 43061, 50660, 86122, 172244, 215305, 430610, 861220]

約数ペア:

[(1, 861220), (2, 430610), (4, 215305), (5, 172244), (10, 86122), (17, 50660), (20, 43061), (34, 25330), (68, 12665), (85, 10132), (149, 5780), (170, 5066), (289, 2980), (298, 2890), (340, 2533), (578, 1490), (596, 1445), (745, 1156)]