21421660

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{1753}}^1$

素因数の和:1822

約数の個数: 48

約数和(自身を含む): 49504896

約数和(自身を除く): 28083236

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 47, 52, 65, 94, 130, 188, 235, 260, 470, 611, 940, 1222, 1753, 2444, 3055, 3506, 6110, 7012, 8765, 12220, 17530, 22789, 35060, 45578, 82391, 91156, 113945, 164782, 227890, 329564, 411955, 455780, 823910, 1071083, 1647820, 2142166, 4284332, 5355415, 10710830, 21421660]

約数ペア:

[(1, 21421660), (2, 10710830), (4, 5355415), (5, 4284332), (10, 2142166), (13, 1647820), (20, 1071083), (26, 823910), (47, 455780), (52, 411955), (65, 329564), (94, 227890), (130, 164782), (188, 113945), (235, 91156), (260, 82391), (470, 45578), (611, 35060), (940, 22789), (1222, 17530), (1753, 12220), (2444, 8765), (3055, 7012), (3506, 6110)]