21188440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{5821}}^1$

素因数の和:5852

約数の個数: 64

約数和(自身を含む): 58685760

約数和(自身を除く): 37497320

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 5821, 11642, 23284, 29105, 40747, 46568, 58210, 75673, 81494, 116420, 151346, 162988, 203735, 232840, 302692, 325976, 378365, 407470, 529711, 605384, 756730, 814940, 1059422, 1513460, 1629880, 2118844, 2648555, 3026920, 4237688, 5297110, 10594220, 21188440]

約数ペア:

[(1, 21188440), (2, 10594220), (4, 5297110), (5, 4237688), (7, 3026920), (8, 2648555), (10, 2118844), (13, 1629880), (14, 1513460), (20, 1059422), (26, 814940), (28, 756730), (35, 605384), (40, 529711), (52, 407470), (56, 378365), (65, 325976), (70, 302692), (91, 232840), (104, 203735), (130, 162988), (140, 151346), (182, 116420), (260, 81494), (280, 75673), (364, 58210), (455, 46568), (520, 40747), (728, 29105), (910, 23284), (1820, 11642), (3640, 5821)]