18665320

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{27449}}^1$

素因数の和:27477

約数の個数: 32

約数和(自身を含む): 44469000

約数和(自身を除く): 25803680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 27449, 54898, 109796, 137245, 219592, 274490, 466633, 548980, 933266, 1097960, 1866532, 2333165, 3733064, 4666330, 9332660, 18665320]

約数ペア:

[(1, 18665320), (2, 9332660), (4, 4666330), (5, 3733064), (8, 2333165), (10, 1866532), (17, 1097960), (20, 933266), (34, 548980), (40, 466633), (68, 274490), (85, 219592), (136, 137245), (170, 109796), (340, 54898), (680, 27449)]