905309840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^2\times {\mathrm{39157}}^1$

素因数の和:39204

約数の個数: 60

約数和(自身を含む): 2236000116

約数和(自身を除く): 1330690276

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 289, 340, 578, 680, 1156, 1360, 1445, 2312, 2890, 4624, 5780, 11560, 23120, 39157, 78314, 156628, 195785, 313256, 391570, 626512, 665669, 783140, 1331338, 1566280, 2662676, 3132560, 3328345, 5325352, 6656690, 10650704, 11316373, 13313380, 22632746, 26626760, 45265492, 53253520, 56581865, 90530984, 113163730, 181061968, 226327460, 452654920, 905309840]

約数ペア:

[(1, 905309840), (2, 452654920), (4, 226327460), (5, 181061968), (8, 113163730), (10, 90530984), (16, 56581865), (17, 53253520), (20, 45265492), (34, 26626760), (40, 22632746), (68, 13313380), (80, 11316373), (85, 10650704), (136, 6656690), (170, 5325352), (272, 3328345), (289, 3132560), (340, 2662676), (578, 1566280), (680, 1331338), (1156, 783140), (1360, 665669), (1445, 626512), (2312, 391570), (2890, 313256), (4624, 195785), (5780, 156628), (11560, 78314), (23120, 39157)]