21859688

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{2399}}^1$

素因数の和:2489

約数の個数: 32

約数和(自身を含む): 44064000

約数和(自身を除く): 22204312

約数列:

[1, 2, 4, 8, 17, 34, 67, 68, 134, 136, 268, 536, 1139, 2278, 2399, 4556, 4798, 9112, 9596, 19192, 40783, 81566, 160733, 163132, 321466, 326264, 642932, 1285864, 2732461, 5464922, 10929844, 21859688]

約数ペア:

[(1, 21859688), (2, 10929844), (4, 5464922), (8, 2732461), (17, 1285864), (34, 642932), (67, 326264), (68, 321466), (134, 163132), (136, 160733), (268, 81566), (536, 40783), (1139, 19192), (2278, 9596), (2399, 9112), (4556, 4798)]