18761080

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{109}}^1\times {\mathrm{331}}^1$

素因数の和:464

約数の個数: 64

約数和(自身を含む): 46015200

約数和(自身を除く): 27254120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 109, 130, 218, 260, 331, 436, 520, 545, 662, 872, 1090, 1324, 1417, 1655, 2180, 2648, 2834, 3310, 4303, 4360, 5668, 6620, 7085, 8606, 11336, 13240, 14170, 17212, 21515, 28340, 34424, 36079, 43030, 56680, 72158, 86060, 144316, 172120, 180395, 288632, 360790, 469027, 721580, 938054, 1443160, 1876108, 2345135, 3752216, 4690270, 9380540, 18761080]

約数ペア:

[(1, 18761080), (2, 9380540), (4, 4690270), (5, 3752216), (8, 2345135), (10, 1876108), (13, 1443160), (20, 938054), (26, 721580), (40, 469027), (52, 360790), (65, 288632), (104, 180395), (109, 172120), (130, 144316), (218, 86060), (260, 72158), (331, 56680), (436, 43030), (520, 36079), (545, 34424), (662, 28340), (872, 21515), (1090, 17212), (1324, 14170), (1417, 13240), (1655, 11336), (2180, 8606), (2648, 7085), (2834, 6620), (3310, 5668), (4303, 4360)]