20694880

素因数分解:

$2^5\times 5^1\times {\mathrm{211}}^1\times {\mathrm{613}}^1$

素因数の和:839

約数の個数: 48

約数和(自身を含む): 49203504

約数和(自身を除く): 28508624

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 211, 422, 613, 844, 1055, 1226, 1688, 2110, 2452, 3065, 3376, 4220, 4904, 6130, 6752, 8440, 9808, 12260, 16880, 19616, 24520, 33760, 49040, 98080, 129343, 258686, 517372, 646715, 1034744, 1293430, 2069488, 2586860, 4138976, 5173720, 10347440, 20694880]

約数ペア:

[(1, 20694880), (2, 10347440), (4, 5173720), (5, 4138976), (8, 2586860), (10, 2069488), (16, 1293430), (20, 1034744), (32, 646715), (40, 517372), (80, 258686), (160, 129343), (211, 98080), (422, 49040), (613, 33760), (844, 24520), (1055, 19616), (1226, 16880), (1688, 12260), (2110, 9808), (2452, 8440), (3065, 6752), (3376, 6130), (4220, 4904)]