20796867

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{379}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 37623040

約数和(自身を除く): 16826173

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 67, 91, 117, 201, 273, 379, 469, 603, 819, 871, 1137, 1407, 2613, 2653, 3411, 4221, 4927, 6097, 7839, 7959, 14781, 18291, 23877, 25393, 34489, 44343, 54873, 76179, 103467, 177751, 228537, 310401, 330109, 533253, 990327, 1599759, 2310763, 2970981, 6932289, 20796867]

約数ペア:

[(1, 20796867), (3, 6932289), (7, 2970981), (9, 2310763), (13, 1599759), (21, 990327), (39, 533253), (63, 330109), (67, 310401), (91, 228537), (117, 177751), (201, 103467), (273, 76179), (379, 54873), (469, 44343), (603, 34489), (819, 25393), (871, 23877), (1137, 18291), (1407, 14781), (2613, 7959), (2653, 7839), (3411, 6097), (4221, 4927)]