31298840

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{587}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 74511360

約数和(自身を除く): 43212520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 43, 62, 86, 124, 155, 172, 215, 248, 310, 344, 430, 587, 620, 860, 1174, 1240, 1333, 1720, 2348, 2666, 2935, 4696, 5332, 5870, 6665, 10664, 11740, 13330, 18197, 23480, 25241, 26660, 36394, 50482, 53320, 72788, 90985, 100964, 126205, 145576, 181970, 201928, 252410, 363940, 504820, 727880, 782471, 1009640, 1564942, 3129884, 3912355, 6259768, 7824710, 15649420, 31298840]

約数ペア:

[(1, 31298840), (2, 15649420), (4, 7824710), (5, 6259768), (8, 3912355), (10, 3129884), (20, 1564942), (31, 1009640), (40, 782471), (43, 727880), (62, 504820), (86, 363940), (124, 252410), (155, 201928), (172, 181970), (215, 145576), (248, 126205), (310, 100964), (344, 90985), (430, 72788), (587, 53320), (620, 50482), (860, 36394), (1174, 26660), (1240, 25241), (1333, 23480), (1720, 18197), (2348, 13330), (2666, 11740), (2935, 10664), (4696, 6665), (5332, 5870)]