20008640

素因数分解:

$2^6\times 5^1\times {\mathrm{31}}^1\times {\mathrm{2017}}^1$

素因数の和:2065

約数の個数: 56

約数和(自身を含む): 49206912

約数和(自身を除く): 29198272

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 32, 40, 62, 64, 80, 124, 155, 160, 248, 310, 320, 496, 620, 992, 1240, 1984, 2017, 2480, 4034, 4960, 8068, 9920, 10085, 16136, 20170, 32272, 40340, 62527, 64544, 80680, 125054, 129088, 161360, 250108, 312635, 322720, 500216, 625270, 645440, 1000432, 1250540, 2000864, 2501080, 4001728, 5002160, 10004320, 20008640]

約数ペア:

[(1, 20008640), (2, 10004320), (4, 5002160), (5, 4001728), (8, 2501080), (10, 2000864), (16, 1250540), (20, 1000432), (31, 645440), (32, 625270), (40, 500216), (62, 322720), (64, 312635), (80, 250108), (124, 161360), (155, 129088), (160, 125054), (248, 80680), (310, 64544), (320, 62527), (496, 40340), (620, 32272), (992, 20170), (1240, 16136), (1984, 10085), (2017, 9920), (2480, 8068), (4034, 4960)]