81474945

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{2251}}^1$

素因数の和:2405

約数の個数: 32

約数和(自身を含む): 138362880

約数和(自身を除く): 56887935

約数列:

[1, 3, 5, 15, 19, 57, 95, 127, 285, 381, 635, 1905, 2251, 2413, 6753, 7239, 11255, 12065, 33765, 36195, 42769, 128307, 213845, 285877, 641535, 857631, 1429385, 4288155, 5431663, 16294989, 27158315, 81474945]

約数ペア:

[(1, 81474945), (3, 27158315), (5, 16294989), (15, 5431663), (19, 4288155), (57, 1429385), (95, 857631), (127, 641535), (285, 285877), (381, 213845), (635, 128307), (1905, 42769), (2251, 36195), (2413, 33765), (6753, 12065), (7239, 11255)]