31129240

素因数分解:

$2^3\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{113}}^1$

素因数の和:292

約数の個数: 64

約数和(自身を含む): 72394560

約数和(自身を除く): 41265320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 71, 97, 113, 142, 194, 226, 284, 355, 388, 452, 485, 565, 568, 710, 776, 904, 970, 1130, 1420, 1940, 2260, 2840, 3880, 4520, 6887, 8023, 10961, 13774, 16046, 21922, 27548, 32092, 34435, 40115, 43844, 54805, 55096, 64184, 68870, 80230, 87688, 109610, 137740, 160460, 219220, 275480, 320920, 438440, 778231, 1556462, 3112924, 3891155, 6225848, 7782310, 15564620, 31129240]

約数ペア:

[(1, 31129240), (2, 15564620), (4, 7782310), (5, 6225848), (8, 3891155), (10, 3112924), (20, 1556462), (40, 778231), (71, 438440), (97, 320920), (113, 275480), (142, 219220), (194, 160460), (226, 137740), (284, 109610), (355, 87688), (388, 80230), (452, 68870), (485, 64184), (565, 55096), (568, 54805), (710, 43844), (776, 40115), (904, 34435), (970, 32092), (1130, 27548), (1420, 21922), (1940, 16046), (2260, 13774), (2840, 10961), (3880, 8023), (4520, 6887)]