21170344

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{811}}^1$

素因数の和:1081

約数の個数: 32

約数和(自身を含む): 42971040

約数和(自身を除く): 21800696

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 251, 502, 811, 1004, 1622, 2008, 3244, 3263, 6488, 6526, 10543, 13052, 21086, 26104, 42172, 84344, 203561, 407122, 814244, 1628488, 2646293, 5292586, 10585172, 21170344]

約数ペア:

[(1, 21170344), (2, 10585172), (4, 5292586), (8, 2646293), (13, 1628488), (26, 814244), (52, 407122), (104, 203561), (251, 84344), (502, 42172), (811, 26104), (1004, 21086), (1622, 13052), (2008, 10543), (3244, 6526), (3263, 6488)]