20118670

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{1279}}^1$

素因数の和:1321

約数の個数: 48

約数和(自身を含む): 42900480

約数和(自身を除く): 22781810

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 121, 130, 143, 242, 286, 605, 715, 1210, 1279, 1430, 1573, 2558, 3146, 6395, 7865, 12790, 14069, 15730, 16627, 28138, 33254, 70345, 83135, 140690, 154759, 166270, 182897, 309518, 365794, 773795, 914485, 1547590, 1828970, 2011867, 4023734, 10059335, 20118670]

約数ペア:

[(1, 20118670), (2, 10059335), (5, 4023734), (10, 2011867), (11, 1828970), (13, 1547590), (22, 914485), (26, 773795), (55, 365794), (65, 309518), (110, 182897), (121, 166270), (130, 154759), (143, 140690), (242, 83135), (286, 70345), (605, 33254), (715, 28138), (1210, 16627), (1279, 15730), (1430, 14069), (1573, 12790), (2558, 7865), (3146, 6395)]