18985580

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1\times {\mathrm{277}}^1$

素因数の和:458

約数の個数: 48

約数和(自身を含む): 42033600

約数和(自身を除く): 23048020

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 149, 230, 277, 298, 460, 554, 596, 745, 1108, 1385, 1490, 2770, 2980, 3427, 5540, 6371, 6854, 12742, 13708, 17135, 25484, 31855, 34270, 41273, 63710, 68540, 82546, 127420, 165092, 206365, 412730, 825460, 949279, 1898558, 3797116, 4746395, 9492790, 18985580]

約数ペア:

[(1, 18985580), (2, 9492790), (4, 4746395), (5, 3797116), (10, 1898558), (20, 949279), (23, 825460), (46, 412730), (92, 206365), (115, 165092), (149, 127420), (230, 82546), (277, 68540), (298, 63710), (460, 41273), (554, 34270), (596, 31855), (745, 25484), (1108, 17135), (1385, 13708), (1490, 12742), (2770, 6854), (2980, 6371), (3427, 5540)]