427720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{37}}^1$

素因数の和:82

約数の個数: 48

約数和(自身を含む): 1049940

約数和(自身を除く): 622220

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 37, 40, 68, 74, 85, 136, 148, 170, 185, 289, 296, 340, 370, 578, 629, 680, 740, 1156, 1258, 1445, 1480, 2312, 2516, 2890, 3145, 5032, 5780, 6290, 10693, 11560, 12580, 21386, 25160, 42772, 53465, 85544, 106930, 213860, 427720]

約数ペア:

[(1, 427720), (2, 213860), (4, 106930), (5, 85544), (8, 53465), (10, 42772), (17, 25160), (20, 21386), (34, 12580), (37, 11560), (40, 10693), (68, 6290), (74, 5780), (85, 5032), (136, 3145), (148, 2890), (170, 2516), (185, 2312), (289, 1480), (296, 1445), (340, 1258), (370, 1156), (578, 740), (629, 680)]