128345420

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{223}}^1\times {\mathrm{4111}}^1$

素因数の和:4350

約数の個数: 48

約数和(自身を含む): 309485568

約数和(自身を除く): 181140148

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 223, 446, 892, 1115, 1561, 2230, 3122, 4111, 4460, 6244, 7805, 8222, 15610, 16444, 20555, 28777, 31220, 41110, 57554, 82220, 115108, 143885, 287770, 575540, 916753, 1833506, 3667012, 4583765, 6417271, 9167530, 12834542, 18335060, 25669084, 32086355, 64172710, 128345420]

約数ペア:

[(1, 128345420), (2, 64172710), (4, 32086355), (5, 25669084), (7, 18335060), (10, 12834542), (14, 9167530), (20, 6417271), (28, 4583765), (35, 3667012), (70, 1833506), (140, 916753), (223, 575540), (446, 287770), (892, 143885), (1115, 115108), (1561, 82220), (2230, 57554), (3122, 41110), (4111, 31220), (4460, 28777), (6244, 20555), (7805, 16444), (8222, 15610)]