20631872

素因数分解:

$2^6\times {\mathrm{19}}^3\times {\mathrm{47}}^1$

素因数の和:116

約数の個数: 56

約数和(自身を含む): 44135040

約数和(自身を除く): 23503168

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 47, 64, 76, 94, 152, 188, 304, 361, 376, 608, 722, 752, 893, 1216, 1444, 1504, 1786, 2888, 3008, 3572, 5776, 6859, 7144, 11552, 13718, 14288, 16967, 23104, 27436, 28576, 33934, 54872, 57152, 67868, 109744, 135736, 219488, 271472, 322373, 438976, 542944, 644746, 1085888, 1289492, 2578984, 5157968, 10315936, 20631872]

約数ペア:

[(1, 20631872), (2, 10315936), (4, 5157968), (8, 2578984), (16, 1289492), (19, 1085888), (32, 644746), (38, 542944), (47, 438976), (64, 322373), (76, 271472), (94, 219488), (152, 135736), (188, 109744), (304, 67868), (361, 57152), (376, 54872), (608, 33934), (722, 28576), (752, 27436), (893, 23104), (1216, 16967), (1444, 14288), (1504, 13718), (1786, 11552), (2888, 7144), (3008, 6859), (3572, 5776)]