21057712

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{3491}}^1$

素因数の和:3541

約数の個数: 40

約数和(自身を含む): 45465840

約数和(自身を除く): 24408128

約数列:

[1, 2, 4, 8, 13, 16, 26, 29, 52, 58, 104, 116, 208, 232, 377, 464, 754, 1508, 3016, 3491, 6032, 6982, 13964, 27928, 45383, 55856, 90766, 101239, 181532, 202478, 363064, 404956, 726128, 809912, 1316107, 1619824, 2632214, 5264428, 10528856, 21057712]

約数ペア:

[(1, 21057712), (2, 10528856), (4, 5264428), (8, 2632214), (13, 1619824), (16, 1316107), (26, 809912), (29, 726128), (52, 404956), (58, 363064), (104, 202478), (116, 181532), (208, 101239), (232, 90766), (377, 55856), (464, 45383), (754, 27928), (1508, 13964), (3016, 6982), (3491, 6032)]