21260360

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{211}}^1\times {\mathrm{229}}^1$

素因数の和:462

約数の個数: 64

約数和(自身を含む): 52660800

約数和(自身を除く): 31400440

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 211, 220, 229, 422, 440, 458, 844, 916, 1055, 1145, 1688, 1832, 2110, 2290, 2321, 2519, 4220, 4580, 4642, 5038, 8440, 9160, 9284, 10076, 11605, 12595, 18568, 20152, 23210, 25190, 46420, 48319, 50380, 92840, 96638, 100760, 193276, 241595, 386552, 483190, 531509, 966380, 1063018, 1932760, 2126036, 2657545, 4252072, 5315090, 10630180, 21260360]

約数ペア:

[(1, 21260360), (2, 10630180), (4, 5315090), (5, 4252072), (8, 2657545), (10, 2126036), (11, 1932760), (20, 1063018), (22, 966380), (40, 531509), (44, 483190), (55, 386552), (88, 241595), (110, 193276), (211, 100760), (220, 96638), (229, 92840), (422, 50380), (440, 48319), (458, 46420), (844, 25190), (916, 23210), (1055, 20152), (1145, 18568), (1688, 12595), (1832, 11605), (2110, 10076), (2290, 9284), (2321, 9160), (2519, 8440), (4220, 5038), (4580, 4642)]