20280884

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{83}}^1\times {\mathrm{127}}^1$

素因数の和:264

約数の個数: 48

約数和(自身を含む): 40040448

約数和(自身を除く): 19759564

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 83, 127, 148, 166, 254, 332, 481, 508, 962, 1079, 1651, 1924, 2158, 3071, 3302, 4316, 4699, 6142, 6604, 9398, 10541, 12284, 18796, 21082, 39923, 42164, 61087, 79846, 122174, 137033, 159692, 244348, 274066, 390017, 548132, 780034, 1560068, 5070221, 10140442, 20280884]

約数ペア:

[(1, 20280884), (2, 10140442), (4, 5070221), (13, 1560068), (26, 780034), (37, 548132), (52, 390017), (74, 274066), (83, 244348), (127, 159692), (148, 137033), (166, 122174), (254, 79846), (332, 61087), (481, 42164), (508, 39923), (962, 21082), (1079, 18796), (1651, 12284), (1924, 10541), (2158, 9398), (3071, 6604), (3302, 6142), (4316, 4699)]