85909840

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{349}}^1$

素因数の和:560

約数の個数: 80

約数和(自身を含む): 213267600

約数和(自身を除く): 127357760

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 181, 272, 340, 349, 362, 680, 698, 724, 905, 1360, 1396, 1448, 1745, 1810, 2792, 2896, 3077, 3490, 3620, 5584, 5933, 6154, 6980, 7240, 11866, 12308, 13960, 14480, 15385, 23732, 24616, 27920, 29665, 30770, 47464, 49232, 59330, 61540, 63169, 94928, 118660, 123080, 126338, 237320, 246160, 252676, 315845, 474640, 505352, 631690, 1010704, 1073873, 1263380, 2147746, 2526760, 4295492, 5053520, 5369365, 8590984, 10738730, 17181968, 21477460, 42954920, 85909840]

約数ペア:

[(1, 85909840), (2, 42954920), (4, 21477460), (5, 17181968), (8, 10738730), (10, 8590984), (16, 5369365), (17, 5053520), (20, 4295492), (34, 2526760), (40, 2147746), (68, 1263380), (80, 1073873), (85, 1010704), (136, 631690), (170, 505352), (181, 474640), (272, 315845), (340, 252676), (349, 246160), (362, 237320), (680, 126338), (698, 123080), (724, 118660), (905, 94928), (1360, 63169), (1396, 61540), (1448, 59330), (1745, 49232), (1810, 47464), (2792, 30770), (2896, 29665), (3077, 27920), (3490, 24616), (3620, 23732), (5584, 15385), (5933, 14480), (6154, 13960), (6980, 12308), (7240, 11866)]