81552440

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{55103}}^1$

素因数の和:55151

約数の個数: 32

約数和(自身を含む): 188455680

約数和(自身を除く): 106903240

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 148, 185, 296, 370, 740, 1480, 55103, 110206, 220412, 275515, 440824, 551030, 1102060, 2038811, 2204120, 4077622, 8155244, 10194055, 16310488, 20388110, 40776220, 81552440]

約数ペア:

[(1, 81552440), (2, 40776220), (4, 20388110), (5, 16310488), (8, 10194055), (10, 8155244), (20, 4077622), (37, 2204120), (40, 2038811), (74, 1102060), (148, 551030), (185, 440824), (296, 275515), (370, 220412), (740, 110206), (1480, 55103)]