31214440

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{379}}^1$

素因数の和:490

約数の個数: 64

約数和(自身を含む): 73872000

約数和(自身を除く): 42657560

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 71, 116, 142, 145, 232, 284, 290, 355, 379, 568, 580, 710, 758, 1160, 1420, 1516, 1895, 2059, 2840, 3032, 3790, 4118, 7580, 8236, 10295, 10991, 15160, 16472, 20590, 21982, 26909, 41180, 43964, 53818, 54955, 82360, 87928, 107636, 109910, 134545, 215272, 219820, 269090, 439640, 538180, 780361, 1076360, 1560722, 3121444, 3901805, 6242888, 7803610, 15607220, 31214440]

約数ペア:

[(1, 31214440), (2, 15607220), (4, 7803610), (5, 6242888), (8, 3901805), (10, 3121444), (20, 1560722), (29, 1076360), (40, 780361), (58, 538180), (71, 439640), (116, 269090), (142, 219820), (145, 215272), (232, 134545), (284, 109910), (290, 107636), (355, 87928), (379, 82360), (568, 54955), (580, 53818), (710, 43964), (758, 41180), (1160, 26909), (1420, 21982), (1516, 20590), (1895, 16472), (2059, 15160), (2840, 10991), (3032, 10295), (3790, 8236), (4118, 7580)]