640461230

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{797}}^1$

素因数の和:1013

約数の個数: 64

約数和(自身を含む): 1272075840

約数和(自身を除く): 631614610

約数列:

[1, 2, 5, 10, 17, 29, 34, 58, 85, 145, 163, 170, 290, 326, 493, 797, 815, 986, 1594, 1630, 2465, 2771, 3985, 4727, 4930, 5542, 7970, 9454, 13549, 13855, 23113, 23635, 27098, 27710, 46226, 47270, 67745, 80359, 115565, 129911, 135490, 160718, 231130, 259822, 392921, 401795, 649555, 785842, 803590, 1299110, 1964605, 2208487, 3767419, 3929210, 4416974, 7534838, 11042435, 18837095, 22084870, 37674190, 64046123, 128092246, 320230615, 640461230]

約数ペア:

[(1, 640461230), (2, 320230615), (5, 128092246), (10, 64046123), (17, 37674190), (29, 22084870), (34, 18837095), (58, 11042435), (85, 7534838), (145, 4416974), (163, 3929210), (170, 3767419), (290, 2208487), (326, 1964605), (493, 1299110), (797, 803590), (815, 785842), (986, 649555), (1594, 401795), (1630, 392921), (2465, 259822), (2771, 231130), (3985, 160718), (4727, 135490), (4930, 129911), (5542, 115565), (7970, 80359), (9454, 67745), (13549, 47270), (13855, 46226), (23113, 27710), (23635, 27098)]