21894160

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{163}}^1$

素因数の和:272

約数の個数: 80

約数和(自身を含む): 54175104

約数和(自身を除く): 32280944

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 46, 73, 80, 92, 115, 146, 163, 184, 230, 292, 326, 365, 368, 460, 584, 652, 730, 815, 920, 1168, 1304, 1460, 1630, 1679, 1840, 2608, 2920, 3260, 3358, 3749, 5840, 6520, 6716, 7498, 8395, 11899, 13040, 13432, 14996, 16790, 18745, 23798, 26864, 29992, 33580, 37490, 47596, 59495, 59984, 67160, 74980, 95192, 118990, 134320, 149960, 190384, 237980, 273677, 299920, 475960, 547354, 951920, 1094708, 1368385, 2189416, 2736770, 4378832, 5473540, 10947080, 21894160]

約数ペア:

[(1, 21894160), (2, 10947080), (4, 5473540), (5, 4378832), (8, 2736770), (10, 2189416), (16, 1368385), (20, 1094708), (23, 951920), (40, 547354), (46, 475960), (73, 299920), (80, 273677), (92, 237980), (115, 190384), (146, 149960), (163, 134320), (184, 118990), (230, 95192), (292, 74980), (326, 67160), (365, 59984), (368, 59495), (460, 47596), (584, 37490), (652, 33580), (730, 29992), (815, 26864), (920, 23798), (1168, 18745), (1304, 16790), (1460, 14996), (1630, 13432), (1679, 13040), (1840, 11899), (2608, 8395), (2920, 7498), (3260, 6716), (3358, 6520), (3749, 5840)]