21613735

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1$

素因数の和:128

約数の個数: 64

約数和(自身を含む): 33707520

約数和(自身を除く): 12093785

約数列:

[1, 5, 11, 13, 19, 37, 43, 55, 65, 95, 143, 185, 209, 215, 247, 407, 473, 481, 559, 703, 715, 817, 1045, 1235, 1591, 2035, 2365, 2405, 2717, 2795, 3515, 4085, 5291, 6149, 7733, 7955, 8987, 9139, 10621, 13585, 17501, 20683, 26455, 30229, 30745, 38665, 44935, 45695, 53105, 87505, 100529, 103415, 116831, 151145, 227513, 332519, 392977, 502645, 584155, 1137565, 1662595, 1964885, 4322747, 21613735]

約数ペア:

[(1, 21613735), (5, 4322747), (11, 1964885), (13, 1662595), (19, 1137565), (37, 584155), (43, 502645), (55, 392977), (65, 332519), (95, 227513), (143, 151145), (185, 116831), (209, 103415), (215, 100529), (247, 87505), (407, 53105), (473, 45695), (481, 44935), (559, 38665), (703, 30745), (715, 30229), (817, 26455), (1045, 20683), (1235, 17501), (1591, 13585), (2035, 10621), (2365, 9139), (2405, 8987), (2717, 7955), (2795, 7733), (3515, 6149), (4085, 5291)]