21290336

素因数分解:

$2^5\times {\mathrm{19}}^3\times {\mathrm{97}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 44699760

約数和(自身を除く): 23409424

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 76, 97, 152, 194, 304, 361, 388, 608, 722, 776, 1444, 1552, 1843, 2888, 3104, 3686, 5776, 6859, 7372, 11552, 13718, 14744, 27436, 29488, 35017, 54872, 58976, 70034, 109744, 140068, 219488, 280136, 560272, 665323, 1120544, 1330646, 2661292, 5322584, 10645168, 21290336]

約数ペア:

[(1, 21290336), (2, 10645168), (4, 5322584), (8, 2661292), (16, 1330646), (19, 1120544), (32, 665323), (38, 560272), (76, 280136), (97, 219488), (152, 140068), (194, 109744), (304, 70034), (361, 58976), (388, 54872), (608, 35017), (722, 29488), (776, 27436), (1444, 14744), (1552, 13718), (1843, 11552), (2888, 7372), (3104, 6859), (3686, 5776)]