31286860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{2003}}^1$

素因数の和:2094

約数の個数: 48

約数和(自身を含む): 72721152

約数和(自身を除く): 41434292

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 2003, 3124, 3905, 4006, 7810, 8012, 10015, 15620, 20030, 22033, 40060, 44066, 88132, 110165, 142213, 220330, 284426, 440660, 568852, 711065, 1422130, 1564343, 2844260, 3128686, 6257372, 7821715, 15643430, 31286860]

約数ペア:

[(1, 31286860), (2, 15643430), (4, 7821715), (5, 6257372), (10, 3128686), (11, 2844260), (20, 1564343), (22, 1422130), (44, 711065), (55, 568852), (71, 440660), (110, 284426), (142, 220330), (220, 142213), (284, 110165), (355, 88132), (710, 44066), (781, 40060), (1420, 22033), (1562, 20030), (2003, 15620), (3124, 10015), (3905, 8012), (4006, 7810)]