21618948

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{997}}^1$

素因数の和:1156

約数の個数: 48

約数和(自身を含む): 54770240

約数和(自身を除く): 33151292

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 139, 156, 278, 417, 556, 834, 997, 1668, 1807, 1994, 2991, 3614, 3988, 5421, 5982, 7228, 10842, 11964, 12961, 21684, 25922, 38883, 51844, 77766, 138583, 155532, 277166, 415749, 554332, 831498, 1662996, 1801579, 3603158, 5404737, 7206316, 10809474, 21618948]

約数ペア:

[(1, 21618948), (2, 10809474), (3, 7206316), (4, 5404737), (6, 3603158), (12, 1801579), (13, 1662996), (26, 831498), (39, 554332), (52, 415749), (78, 277166), (139, 155532), (156, 138583), (278, 77766), (417, 51844), (556, 38883), (834, 25922), (997, 21684), (1668, 12961), (1807, 11964), (1994, 10842), (2991, 7228), (3614, 5982), (3988, 5421)]