20787676

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{23}}^1\times {\mathrm{191}}^1$

素因数の和:251

約数の個数: 72

約数和(自身を含む): 47222784

約数和(自身を除く): 26435108

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 52, 91, 92, 161, 169, 182, 191, 299, 322, 338, 364, 382, 598, 644, 676, 764, 1183, 1196, 1337, 2093, 2366, 2483, 2674, 3887, 4186, 4393, 4732, 4966, 5348, 7774, 8372, 8786, 9932, 15548, 17381, 17572, 27209, 30751, 32279, 34762, 54418, 57109, 61502, 64558, 69524, 108836, 114218, 123004, 129116, 225953, 228436, 399763, 451906, 742417, 799526, 903812, 1484834, 1599052, 2969668, 5196919, 10393838, 20787676]

約数ペア:

[(1, 20787676), (2, 10393838), (4, 5196919), (7, 2969668), (13, 1599052), (14, 1484834), (23, 903812), (26, 799526), (28, 742417), (46, 451906), (52, 399763), (91, 228436), (92, 225953), (161, 129116), (169, 123004), (182, 114218), (191, 108836), (299, 69524), (322, 64558), (338, 61502), (364, 57109), (382, 54418), (598, 34762), (644, 32279), (676, 30751), (764, 27209), (1183, 17572), (1196, 17381), (1337, 15548), (2093, 9932), (2366, 8786), (2483, 8372), (2674, 7774), (3887, 5348), (4186, 4966), (4393, 4732)]