66871960

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{271}}^1$

素因数の和:512

約数の個数: 64

約数和(自身を含む): 156672000

約数和(自身を除く): 89800040

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 199, 248, 271, 310, 398, 542, 620, 796, 995, 1084, 1240, 1355, 1592, 1990, 2168, 2710, 3980, 5420, 6169, 7960, 8401, 10840, 12338, 16802, 24676, 30845, 33604, 42005, 49352, 53929, 61690, 67208, 84010, 107858, 123380, 168020, 215716, 246760, 269645, 336040, 431432, 539290, 1078580, 1671799, 2157160, 3343598, 6687196, 8358995, 13374392, 16717990, 33435980, 66871960]

約数ペア:

[(1, 66871960), (2, 33435980), (4, 16717990), (5, 13374392), (8, 8358995), (10, 6687196), (20, 3343598), (31, 2157160), (40, 1671799), (62, 1078580), (124, 539290), (155, 431432), (199, 336040), (248, 269645), (271, 246760), (310, 215716), (398, 168020), (542, 123380), (620, 107858), (796, 84010), (995, 67208), (1084, 61690), (1240, 53929), (1355, 49352), (1592, 42005), (1990, 33604), (2168, 30845), (2710, 24676), (3980, 16802), (5420, 12338), (6169, 10840), (7960, 8401)]