80120740

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18461}}^1$

素因数の和:18508

約数の個数: 48

約数和(自身を含む): 198503424

約数和(自身を除く): 118382684

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 31, 35, 62, 70, 124, 140, 155, 217, 310, 434, 620, 868, 1085, 2170, 4340, 18461, 36922, 73844, 92305, 129227, 184610, 258454, 369220, 516908, 572291, 646135, 1144582, 1292270, 2289164, 2584540, 2861455, 4006037, 5722910, 8012074, 11445820, 16024148, 20030185, 40060370, 80120740]

約数ペア:

[(1, 80120740), (2, 40060370), (4, 20030185), (5, 16024148), (7, 11445820), (10, 8012074), (14, 5722910), (20, 4006037), (28, 2861455), (31, 2584540), (35, 2289164), (62, 1292270), (70, 1144582), (124, 646135), (140, 572291), (155, 516908), (217, 369220), (310, 258454), (434, 184610), (620, 129227), (868, 92305), (1085, 73844), (2170, 36922), (4340, 18461)]