21123304380

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{747463}}^1$

素因数の和:747635

約数の個数: 72

約数和(自身を含む): 64482224352

約数和(自身を除く): 43358919972

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 157, 180, 314, 471, 628, 785, 942, 1413, 1570, 1884, 2355, 2826, 3140, 4710, 5652, 7065, 9420, 14130, 28260, 747463, 1494926, 2242389, 2989852, 3737315, 4484778, 6727167, 7474630, 8969556, 11211945, 13454334, 14949260, 22423890, 26908668, 33635835, 44847780, 67271670, 117351691, 134543340, 234703382, 352055073, 469406764, 586758455, 704110146, 1056165219, 1173516910, 1408220292, 1760275365, 2112330438, 2347033820, 3520550730, 4224660876, 5280826095, 7041101460, 10561652190, 21123304380]

約数ペア:

[(1, 21123304380), (2, 10561652190), (3, 7041101460), (4, 5280826095), (5, 4224660876), (6, 3520550730), (9, 2347033820), (10, 2112330438), (12, 1760275365), (15, 1408220292), (18, 1173516910), (20, 1056165219), (30, 704110146), (36, 586758455), (45, 469406764), (60, 352055073), (90, 234703382), (157, 134543340), (180, 117351691), (314, 67271670), (471, 44847780), (628, 33635835), (785, 26908668), (942, 22423890), (1413, 14949260), (1570, 13454334), (1884, 11211945), (2355, 8969556), (2826, 7474630), (3140, 6727167), (4710, 4484778), (5652, 3737315), (7065, 2989852), (9420, 2242389), (14130, 1494926), (28260, 747463)]