81017260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{877}}^1$

素因数の和:1066

約数の個数: 48

約数和(自身を含む): 177004800

約数和(自身を除く): 95987540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 298, 310, 596, 620, 745, 877, 1490, 1754, 2980, 3508, 4385, 4619, 8770, 9238, 17540, 18476, 23095, 27187, 46190, 54374, 92380, 108748, 130673, 135935, 261346, 271870, 522692, 543740, 653365, 1306730, 2613460, 4050863, 8101726, 16203452, 20254315, 40508630, 81017260]

約数ペア:

[(1, 81017260), (2, 40508630), (4, 20254315), (5, 16203452), (10, 8101726), (20, 4050863), (31, 2613460), (62, 1306730), (124, 653365), (149, 543740), (155, 522692), (298, 271870), (310, 261346), (596, 135935), (620, 130673), (745, 108748), (877, 92380), (1490, 54374), (1754, 46190), (2980, 27187), (3508, 23095), (4385, 18476), (4619, 17540), (8770, 9238)]