18884840

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1579}}^1$

素因数の和:1626

約数の個数: 64

約数和(自身を含む): 47779200

約数和(自身を除く): 28894360

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 23, 26, 40, 46, 52, 65, 92, 104, 115, 130, 184, 230, 260, 299, 460, 520, 598, 920, 1196, 1495, 1579, 2392, 2990, 3158, 5980, 6316, 7895, 11960, 12632, 15790, 20527, 31580, 36317, 41054, 63160, 72634, 82108, 102635, 145268, 164216, 181585, 205270, 290536, 363170, 410540, 472121, 726340, 821080, 944242, 1452680, 1888484, 2360605, 3776968, 4721210, 9442420, 18884840]

約数ペア:

[(1, 18884840), (2, 9442420), (4, 4721210), (5, 3776968), (8, 2360605), (10, 1888484), (13, 1452680), (20, 944242), (23, 821080), (26, 726340), (40, 472121), (46, 410540), (52, 363170), (65, 290536), (92, 205270), (104, 181585), (115, 164216), (130, 145268), (184, 102635), (230, 82108), (260, 72634), (299, 63160), (460, 41054), (520, 36317), (598, 31580), (920, 20527), (1196, 15790), (1495, 12632), (1579, 11960), (2392, 7895), (2990, 6316), (3158, 5980)]