21450544

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1721}}^1$

素因数の和:1789

約数の個数: 40

約数和(自身を含む): 44840880

約数和(自身を除く): 23390336

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 1721, 3116, 3442, 6232, 6884, 12464, 13768, 27536, 32699, 65398, 70561, 130796, 141122, 261592, 282244, 523184, 564488, 1128976, 1340659, 2681318, 5362636, 10725272, 21450544]

約数ペア:

[(1, 21450544), (2, 10725272), (4, 5362636), (8, 2681318), (16, 1340659), (19, 1128976), (38, 564488), (41, 523184), (76, 282244), (82, 261592), (152, 141122), (164, 130796), (304, 70561), (328, 65398), (656, 32699), (779, 27536), (1558, 13768), (1721, 12464), (3116, 6884), (3442, 6232)]