31819640

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{383}}^1$

素因数の和:492

約数の個数: 64

約数和(自身を含む): 75202560

約数和(自身を除く): 43382920

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 67, 124, 134, 155, 248, 268, 310, 335, 383, 536, 620, 670, 766, 1240, 1340, 1532, 1915, 2077, 2680, 3064, 3830, 4154, 7660, 8308, 10385, 11873, 15320, 16616, 20770, 23746, 25661, 41540, 47492, 51322, 59365, 83080, 94984, 102644, 118730, 128305, 205288, 237460, 256610, 474920, 513220, 795491, 1026440, 1590982, 3181964, 3977455, 6363928, 7954910, 15909820, 31819640]

約数ペア:

[(1, 31819640), (2, 15909820), (4, 7954910), (5, 6363928), (8, 3977455), (10, 3181964), (20, 1590982), (31, 1026440), (40, 795491), (62, 513220), (67, 474920), (124, 256610), (134, 237460), (155, 205288), (248, 128305), (268, 118730), (310, 102644), (335, 94984), (383, 83080), (536, 59365), (620, 51322), (670, 47492), (766, 41540), (1240, 25661), (1340, 23746), (1532, 20770), (1915, 16616), (2077, 15320), (2680, 11873), (3064, 10385), (3830, 8308), (4154, 7660)]