20810556

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{839}}^1$

素因数の和:915

約数の個数: 72

約数和(自身を含む): 57788640

約数和(自身を除く): 36978084

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 53, 78, 106, 117, 156, 159, 212, 234, 318, 468, 477, 636, 689, 839, 954, 1378, 1678, 1908, 2067, 2517, 2756, 3356, 4134, 5034, 6201, 7551, 8268, 10068, 10907, 12402, 15102, 21814, 24804, 30204, 32721, 43628, 44467, 65442, 88934, 98163, 130884, 133401, 177868, 196326, 266802, 392652, 400203, 533604, 578071, 800406, 1156142, 1600812, 1734213, 2312284, 3468426, 5202639, 6936852, 10405278, 20810556]

約数ペア:

[(1, 20810556), (2, 10405278), (3, 6936852), (4, 5202639), (6, 3468426), (9, 2312284), (12, 1734213), (13, 1600812), (18, 1156142), (26, 800406), (36, 578071), (39, 533604), (52, 400203), (53, 392652), (78, 266802), (106, 196326), (117, 177868), (156, 133401), (159, 130884), (212, 98163), (234, 88934), (318, 65442), (468, 44467), (477, 43628), (636, 32721), (689, 30204), (839, 24804), (954, 21814), (1378, 15102), (1678, 12402), (1908, 10907), (2067, 10068), (2517, 8268), (2756, 7551), (3356, 6201), (4134, 5034)]