28020636

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{251}}^1\times {\mathrm{443}}^1$

素因数の和:711

約数の個数: 72

約数和(自身を含む): 81454464

約数和(自身を除く): 53433828

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 251, 252, 443, 502, 753, 886, 1004, 1329, 1506, 1757, 1772, 2259, 2658, 3012, 3101, 3514, 3987, 4518, 5271, 5316, 6202, 7028, 7974, 9036, 9303, 10542, 12404, 15813, 15948, 18606, 21084, 27909, 31626, 37212, 55818, 63252, 111193, 111636, 222386, 333579, 444772, 667158, 778351, 1000737, 1334316, 1556702, 2001474, 2335053, 3113404, 4002948, 4670106, 7005159, 9340212, 14010318, 28020636]

約数ペア:

[(1, 28020636), (2, 14010318), (3, 9340212), (4, 7005159), (6, 4670106), (7, 4002948), (9, 3113404), (12, 2335053), (14, 2001474), (18, 1556702), (21, 1334316), (28, 1000737), (36, 778351), (42, 667158), (63, 444772), (84, 333579), (126, 222386), (251, 111636), (252, 111193), (443, 63252), (502, 55818), (753, 37212), (886, 31626), (1004, 27909), (1329, 21084), (1506, 18606), (1757, 15948), (1772, 15813), (2259, 12404), (2658, 10542), (3012, 9303), (3101, 9036), (3514, 7974), (3987, 7028), (4518, 6202), (5271, 5316)]