21271184

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6361}}^1$

素因数の和:6399

約数の個数: 40

約数和(自身を含む): 47333280

約数和(自身を除く): 26062096

約数列:

[1, 2, 4, 8, 11, 16, 19, 22, 38, 44, 76, 88, 152, 176, 209, 304, 418, 836, 1672, 3344, 6361, 12722, 25444, 50888, 69971, 101776, 120859, 139942, 241718, 279884, 483436, 559768, 966872, 1119536, 1329449, 1933744, 2658898, 5317796, 10635592, 21271184]

約数ペア:

[(1, 21271184), (2, 10635592), (4, 5317796), (8, 2658898), (11, 1933744), (16, 1329449), (19, 1119536), (22, 966872), (38, 559768), (44, 483436), (76, 279884), (88, 241718), (152, 139942), (176, 120859), (209, 101776), (304, 69971), (418, 50888), (836, 25444), (1672, 12722), (3344, 6361)]