64969840

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{349}}^1$

素因数の和:554

約数の個数: 80

約数和(自身を含む): 164052000

約数和(自身を除く): 99082160

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 179, 208, 260, 349, 358, 520, 698, 716, 895, 1040, 1396, 1432, 1745, 1790, 2327, 2792, 2864, 3490, 3580, 4537, 4654, 5584, 6980, 7160, 9074, 9308, 11635, 13960, 14320, 18148, 18616, 22685, 23270, 27920, 36296, 37232, 45370, 46540, 62471, 72592, 90740, 93080, 124942, 181480, 186160, 249884, 312355, 362960, 499768, 624710, 812123, 999536, 1249420, 1624246, 2498840, 3248492, 4060615, 4997680, 6496984, 8121230, 12993968, 16242460, 32484920, 64969840]

約数ペア:

[(1, 64969840), (2, 32484920), (4, 16242460), (5, 12993968), (8, 8121230), (10, 6496984), (13, 4997680), (16, 4060615), (20, 3248492), (26, 2498840), (40, 1624246), (52, 1249420), (65, 999536), (80, 812123), (104, 624710), (130, 499768), (179, 362960), (208, 312355), (260, 249884), (349, 186160), (358, 181480), (520, 124942), (698, 93080), (716, 90740), (895, 72592), (1040, 62471), (1396, 46540), (1432, 45370), (1745, 37232), (1790, 36296), (2327, 27920), (2792, 23270), (2864, 22685), (3490, 18616), (3580, 18148), (4537, 14320), (4654, 13960), (5584, 11635), (6980, 9308), (7160, 9074)]