20461490

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:287

約数の個数: 64

約数和(自身を含む): 44789760

約数和(自身を除く): 24328270

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 71, 115, 142, 161, 179, 230, 322, 355, 358, 497, 710, 805, 895, 994, 1253, 1610, 1633, 1790, 2485, 2506, 3266, 4117, 4970, 6265, 8165, 8234, 11431, 12530, 12709, 16330, 20585, 22862, 25418, 28819, 41170, 57155, 57638, 63545, 88963, 114310, 127090, 144095, 177926, 288190, 292307, 444815, 584614, 889630, 1461535, 2046149, 2923070, 4092298, 10230745, 20461490]

約数ペア:

[(1, 20461490), (2, 10230745), (5, 4092298), (7, 2923070), (10, 2046149), (14, 1461535), (23, 889630), (35, 584614), (46, 444815), (70, 292307), (71, 288190), (115, 177926), (142, 144095), (161, 127090), (179, 114310), (230, 88963), (322, 63545), (355, 57638), (358, 57155), (497, 41170), (710, 28819), (805, 25418), (895, 22862), (994, 20585), (1253, 16330), (1610, 12709), (1633, 12530), (1790, 11431), (2485, 8234), (2506, 8165), (3266, 6265), (4117, 4970)]