20621484

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{317}}^1$

素因数の和:479

約数の個数: 72

約数和(自身を含む): 56718480

約数和(自身を除く): 36096996

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 139, 156, 234, 278, 317, 417, 468, 556, 634, 834, 951, 1251, 1268, 1668, 1807, 1902, 2502, 2853, 3614, 3804, 4121, 5004, 5421, 5706, 7228, 8242, 10842, 11412, 12363, 16263, 16484, 21684, 24726, 32526, 37089, 44063, 49452, 65052, 74178, 88126, 132189, 148356, 176252, 264378, 396567, 528756, 572819, 793134, 1145638, 1586268, 1718457, 2291276, 3436914, 5155371, 6873828, 10310742, 20621484]

約数ペア:

[(1, 20621484), (2, 10310742), (3, 6873828), (4, 5155371), (6, 3436914), (9, 2291276), (12, 1718457), (13, 1586268), (18, 1145638), (26, 793134), (36, 572819), (39, 528756), (52, 396567), (78, 264378), (117, 176252), (139, 148356), (156, 132189), (234, 88126), (278, 74178), (317, 65052), (417, 49452), (468, 44063), (556, 37089), (634, 32526), (834, 24726), (951, 21684), (1251, 16484), (1268, 16263), (1668, 12363), (1807, 11412), (1902, 10842), (2502, 8242), (2853, 7228), (3614, 5706), (3804, 5421), (4121, 5004)]