20486830

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{479}}^1$

素因数の和:553

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25961810

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 47, 65, 70, 91, 94, 130, 182, 235, 329, 455, 470, 479, 611, 658, 910, 958, 1222, 1645, 2395, 3055, 3290, 3353, 4277, 4790, 6110, 6227, 6706, 8554, 12454, 16765, 21385, 22513, 31135, 33530, 42770, 43589, 45026, 62270, 87178, 112565, 157591, 217945, 225130, 292669, 315182, 435890, 585338, 787955, 1463345, 1575910, 2048683, 2926690, 4097366, 10243415, 20486830]

約数ペア:

[(1, 20486830), (2, 10243415), (5, 4097366), (7, 2926690), (10, 2048683), (13, 1575910), (14, 1463345), (26, 787955), (35, 585338), (47, 435890), (65, 315182), (70, 292669), (91, 225130), (94, 217945), (130, 157591), (182, 112565), (235, 87178), (329, 62270), (455, 45026), (470, 43589), (479, 42770), (611, 33530), (658, 31135), (910, 22513), (958, 21385), (1222, 16765), (1645, 12454), (2395, 8554), (3055, 6706), (3290, 6227), (3353, 6110), (4277, 4790)]