207936280

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{211}}^1\times {\mathrm{347}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 478068480

約数和(自身を除く): 270132200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 211, 284, 347, 355, 422, 568, 694, 710, 844, 1055, 1388, 1420, 1688, 1735, 2110, 2776, 2840, 3470, 4220, 6940, 8440, 13880, 14981, 24637, 29962, 49274, 59924, 73217, 74905, 98548, 119848, 123185, 146434, 149810, 197096, 246370, 292868, 299620, 366085, 492740, 585736, 599240, 732170, 985480, 1464340, 2928680, 5198407, 10396814, 20793628, 25992035, 41587256, 51984070, 103968140, 207936280]

約数ペア:

[(1, 207936280), (2, 103968140), (4, 51984070), (5, 41587256), (8, 25992035), (10, 20793628), (20, 10396814), (40, 5198407), (71, 2928680), (142, 1464340), (211, 985480), (284, 732170), (347, 599240), (355, 585736), (422, 492740), (568, 366085), (694, 299620), (710, 292868), (844, 246370), (1055, 197096), (1388, 149810), (1420, 146434), (1688, 123185), (1735, 119848), (2110, 98548), (2776, 74905), (2840, 73217), (3470, 59924), (4220, 49274), (6940, 29962), (8440, 24637), (13880, 14981)]