21680201810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{12037}}^1$

素因数の和:12299

約数の個数: 64

約数和(自身を含む): 41936154624

約数和(自身を除く): 20255952814

約数列:

[1, 2, 5, 10, 23, 41, 46, 82, 115, 191, 205, 230, 382, 410, 943, 955, 1886, 1910, 4393, 4715, 7831, 8786, 9430, 12037, 15662, 21965, 24074, 39155, 43930, 60185, 78310, 120370, 180113, 276851, 360226, 493517, 553702, 900565, 987034, 1384255, 1801130, 2299067, 2467585, 2768510, 4598134, 4935170, 11350891, 11495335, 22701782, 22990670, 52878541, 56754455, 94261747, 105757082, 113508910, 188523494, 264392705, 471308735, 528785410, 942617470, 2168020181, 4336040362, 10840100905, 21680201810]

約数ペア:

[(1, 21680201810), (2, 10840100905), (5, 4336040362), (10, 2168020181), (23, 942617470), (41, 528785410), (46, 471308735), (82, 264392705), (115, 188523494), (191, 113508910), (205, 105757082), (230, 94261747), (382, 56754455), (410, 52878541), (943, 22990670), (955, 22701782), (1886, 11495335), (1910, 11350891), (4393, 4935170), (4715, 4598134), (7831, 2768510), (8786, 2467585), (9430, 2299067), (12037, 1801130), (15662, 1384255), (21965, 987034), (24074, 900565), (39155, 553702), (43930, 493517), (60185, 360226), (78310, 276851), (120370, 180113)]