20959484

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{811}}^1$

素因数の和:906

約数の個数: 48

約数和(自身を含む): 45835776

約数和(自身を除く): 24876292

約数列:

[1, 2, 4, 7, 13, 14, 26, 28, 52, 71, 91, 142, 182, 284, 364, 497, 811, 923, 994, 1622, 1846, 1988, 3244, 3692, 5677, 6461, 10543, 11354, 12922, 21086, 22708, 25844, 42172, 57581, 73801, 115162, 147602, 230324, 295204, 403067, 748553, 806134, 1497106, 1612268, 2994212, 5239871, 10479742, 20959484]

約数ペア:

[(1, 20959484), (2, 10479742), (4, 5239871), (7, 2994212), (13, 1612268), (14, 1497106), (26, 806134), (28, 748553), (52, 403067), (71, 295204), (91, 230324), (142, 147602), (182, 115162), (284, 73801), (364, 57581), (497, 42172), (811, 25844), (923, 22708), (994, 21086), (1622, 12922), (1846, 11354), (1988, 10543), (3244, 6461), (3692, 5677)]