170415640

素因数分解:

$2^3\times 5^1\times {\mathrm{79}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:560

約数の個数: 64

約数和(自身を含む): 391680000

約数和(自身を除く): 221264360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 79, 158, 199, 271, 316, 395, 398, 542, 632, 790, 796, 995, 1084, 1355, 1580, 1592, 1990, 2168, 2710, 3160, 3980, 5420, 7960, 10840, 15721, 21409, 31442, 42818, 53929, 62884, 78605, 85636, 107045, 107858, 125768, 157210, 171272, 214090, 215716, 269645, 314420, 428180, 431432, 539290, 628840, 856360, 1078580, 2157160, 4260391, 8520782, 17041564, 21301955, 34083128, 42603910, 85207820, 170415640]

約数ペア:

[(1, 170415640), (2, 85207820), (4, 42603910), (5, 34083128), (8, 21301955), (10, 17041564), (20, 8520782), (40, 4260391), (79, 2157160), (158, 1078580), (199, 856360), (271, 628840), (316, 539290), (395, 431432), (398, 428180), (542, 314420), (632, 269645), (790, 215716), (796, 214090), (995, 171272), (1084, 157210), (1355, 125768), (1580, 107858), (1592, 107045), (1990, 85636), (2168, 78605), (2710, 62884), (3160, 53929), (3980, 42818), (5420, 31442), (7960, 21409), (10840, 15721)]