20978628

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{103}}^1\times {\mathrm{1543}}^1$

素因数の和:1664

約数の個数: 48

約数和(自身を含む): 53953536

約数和(自身を除く): 32974908

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 103, 132, 206, 309, 412, 618, 1133, 1236, 1543, 2266, 3086, 3399, 4532, 4629, 6172, 6798, 9258, 13596, 16973, 18516, 33946, 50919, 67892, 101838, 158929, 203676, 317858, 476787, 635716, 953574, 1748219, 1907148, 3496438, 5244657, 6992876, 10489314, 20978628]

約数ペア:

[(1, 20978628), (2, 10489314), (3, 6992876), (4, 5244657), (6, 3496438), (11, 1907148), (12, 1748219), (22, 953574), (33, 635716), (44, 476787), (66, 317858), (103, 203676), (132, 158929), (206, 101838), (309, 67892), (412, 50919), (618, 33946), (1133, 18516), (1236, 16973), (1543, 13596), (2266, 9258), (3086, 6798), (3399, 6172), (4532, 4629)]