639841608

素因数分解:

$2^3\times 3^2\times 7^2\times {\mathrm{181361}}^1$

素因数の和:181387

約数の個数: 72

約数和(自身を含む): 2015838630

約数和(自身を除く): 1375997022

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 49, 56, 63, 72, 84, 98, 126, 147, 168, 196, 252, 294, 392, 441, 504, 588, 882, 1176, 1764, 3528, 181361, 362722, 544083, 725444, 1088166, 1269527, 1450888, 1632249, 2176332, 2539054, 3264498, 3808581, 4352664, 5078108, 6528996, 7617162, 8886689, 10156216, 11425743, 13057992, 15234324, 17773378, 22851486, 26660067, 30468648, 35546756, 45702972, 53320134, 71093512, 79980201, 91405944, 106640268, 159960402, 213280536, 319920804, 639841608]

約数ペア:

[(1, 639841608), (2, 319920804), (3, 213280536), (4, 159960402), (6, 106640268), (7, 91405944), (8, 79980201), (9, 71093512), (12, 53320134), (14, 45702972), (18, 35546756), (21, 30468648), (24, 26660067), (28, 22851486), (36, 17773378), (42, 15234324), (49, 13057992), (56, 11425743), (63, 10156216), (72, 8886689), (84, 7617162), (98, 6528996), (126, 5078108), (147, 4352664), (168, 3808581), (196, 3264498), (252, 2539054), (294, 2176332), (392, 1632249), (441, 1450888), (504, 1269527), (588, 1088166), (882, 725444), (1176, 544083), (1764, 362722), (3528, 181361)]