158666680

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{199}}^1\times {\mathrm{643}}^1$

素因数の和:884

約数の個数: 64

約数和(自身を含む): 370944000

約数和(自身を除く): 212277320

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 199, 248, 310, 398, 620, 643, 796, 995, 1240, 1286, 1592, 1990, 2572, 3215, 3980, 5144, 6169, 6430, 7960, 12338, 12860, 19933, 24676, 25720, 30845, 39866, 49352, 61690, 79732, 99665, 123380, 127957, 159464, 199330, 246760, 255914, 398660, 511828, 639785, 797320, 1023656, 1279570, 2559140, 3966667, 5118280, 7933334, 15866668, 19833335, 31733336, 39666670, 79333340, 158666680]

約数ペア:

[(1, 158666680), (2, 79333340), (4, 39666670), (5, 31733336), (8, 19833335), (10, 15866668), (20, 7933334), (31, 5118280), (40, 3966667), (62, 2559140), (124, 1279570), (155, 1023656), (199, 797320), (248, 639785), (310, 511828), (398, 398660), (620, 255914), (643, 246760), (796, 199330), (995, 159464), (1240, 127957), (1286, 123380), (1592, 99665), (1990, 79732), (2572, 61690), (3215, 49352), (3980, 39866), (5144, 30845), (6169, 25720), (6430, 24676), (7960, 19933), (12338, 12860)]