31584020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{331}}^1\times {\mathrm{367}}^1$

素因数の和:720

約数の個数: 48

約数和(自身を含む): 71839488

約数和(自身を除く): 40255468

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 331, 367, 662, 734, 1324, 1468, 1655, 1835, 3310, 3670, 4303, 4771, 6620, 7340, 8606, 9542, 17212, 19084, 21515, 23855, 43030, 47710, 86060, 95420, 121477, 242954, 485908, 607385, 1214770, 1579201, 2429540, 3158402, 6316804, 7896005, 15792010, 31584020]

約数ペア:

[(1, 31584020), (2, 15792010), (4, 7896005), (5, 6316804), (10, 3158402), (13, 2429540), (20, 1579201), (26, 1214770), (52, 607385), (65, 485908), (130, 242954), (260, 121477), (331, 95420), (367, 86060), (662, 47710), (734, 43030), (1324, 23855), (1468, 21515), (1655, 19084), (1835, 17212), (3310, 9542), (3670, 8606), (4303, 7340), (4771, 6620)]