72905740

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1\times {\mathrm{631}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 157671360

約数和(自身を除く): 84765620

約数列:

[1, 2, 4, 5, 10, 20, 53, 106, 109, 212, 218, 265, 436, 530, 545, 631, 1060, 1090, 1262, 2180, 2524, 3155, 5777, 6310, 11554, 12620, 23108, 28885, 33443, 57770, 66886, 68779, 115540, 133772, 137558, 167215, 275116, 334430, 343895, 668860, 687790, 1375580, 3645287, 7290574, 14581148, 18226435, 36452870, 72905740]

約数ペア:

[(1, 72905740), (2, 36452870), (4, 18226435), (5, 14581148), (10, 7290574), (20, 3645287), (53, 1375580), (106, 687790), (109, 668860), (212, 343895), (218, 334430), (265, 275116), (436, 167215), (530, 137558), (545, 133772), (631, 115540), (1060, 68779), (1090, 66886), (1262, 57770), (2180, 33443), (2524, 28885), (3155, 23108), (5777, 12620), (6310, 11554)]