31487320

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:488

約数の個数: 64

約数和(自身を含む): 74419200

約数和(自身を除く): 42931880

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 155, 248, 268, 310, 335, 379, 536, 620, 670, 758, 1240, 1340, 1516, 1895, 2077, 2680, 3032, 3790, 4154, 7580, 8308, 10385, 11749, 15160, 16616, 20770, 23498, 25393, 41540, 46996, 50786, 58745, 83080, 93992, 101572, 117490, 126965, 203144, 234980, 253930, 469960, 507860, 787183, 1015720, 1574366, 3148732, 3935915, 6297464, 7871830, 15743660, 31487320]

約数ペア:

[(1, 31487320), (2, 15743660), (4, 7871830), (5, 6297464), (8, 3935915), (10, 3148732), (20, 1574366), (31, 1015720), (40, 787183), (62, 507860), (67, 469960), (124, 253930), (134, 234980), (155, 203144), (248, 126965), (268, 117490), (310, 101572), (335, 93992), (379, 83080), (536, 58745), (620, 50786), (670, 46996), (758, 41540), (1240, 25393), (1340, 23498), (1516, 20770), (1895, 16616), (2077, 15160), (2680, 11749), (3032, 10385), (3790, 8308), (4154, 7580)]