78728620

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{149}}^1\times {\mathrm{911}}^1$

素因数の和:1098

約数の個数: 48

約数和(自身を含む): 172368000

約数和(自身を除く): 93639380

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 149, 290, 298, 580, 596, 745, 911, 1490, 1822, 2980, 3644, 4321, 4555, 8642, 9110, 17284, 18220, 21605, 26419, 43210, 52838, 86420, 105676, 132095, 135739, 264190, 271478, 528380, 542956, 678695, 1357390, 2714780, 3936431, 7872862, 15745724, 19682155, 39364310, 78728620]

約数ペア:

[(1, 78728620), (2, 39364310), (4, 19682155), (5, 15745724), (10, 7872862), (20, 3936431), (29, 2714780), (58, 1357390), (116, 678695), (145, 542956), (149, 528380), (290, 271478), (298, 264190), (580, 135739), (596, 132095), (745, 105676), (911, 86420), (1490, 52838), (1822, 43210), (2980, 26419), (3644, 21605), (4321, 18220), (4555, 17284), (8642, 9110)]