128761640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{5167}}^1$

素因数の和:5274

約数の個数: 64

約数和(自身を含む): 334886400

約数和(自身を除く): 206124760

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 89, 140, 178, 280, 356, 445, 623, 712, 890, 1246, 1780, 2492, 3115, 3560, 4984, 5167, 6230, 10334, 12460, 20668, 24920, 25835, 36169, 41336, 51670, 72338, 103340, 144676, 180845, 206680, 289352, 361690, 459863, 723380, 919726, 1446760, 1839452, 2299315, 3219041, 3678904, 4598630, 6438082, 9197260, 12876164, 16095205, 18394520, 25752328, 32190410, 64380820, 128761640]

約数ペア:

[(1, 128761640), (2, 64380820), (4, 32190410), (5, 25752328), (7, 18394520), (8, 16095205), (10, 12876164), (14, 9197260), (20, 6438082), (28, 4598630), (35, 3678904), (40, 3219041), (56, 2299315), (70, 1839452), (89, 1446760), (140, 919726), (178, 723380), (280, 459863), (356, 361690), (445, 289352), (623, 206680), (712, 180845), (890, 144676), (1246, 103340), (1780, 72338), (2492, 51670), (3115, 41336), (3560, 36169), (4984, 25835), (5167, 24920), (6230, 20668), (10334, 12460)]