1820865780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{353}}^1\times {\mathrm{28657}}^1$

素因数の和:29025

約数の個数: 72

約数和(自身を含む): 5539132872

約数和(自身を除く): 3718267092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 353, 706, 1059, 1412, 1765, 2118, 3177, 3530, 4236, 5295, 6354, 7060, 10590, 12708, 15885, 21180, 28657, 31770, 57314, 63540, 85971, 114628, 143285, 171942, 257913, 286570, 343884, 429855, 515826, 573140, 859710, 1031652, 1289565, 1719420, 2579130, 5158260, 10115921, 20231842, 30347763, 40463684, 50579605, 60695526, 91043289, 101159210, 121391052, 151738815, 182086578, 202318420, 303477630, 364173156, 455216445, 606955260, 910432890, 1820865780]

約数ペア:

[(1, 1820865780), (2, 910432890), (3, 606955260), (4, 455216445), (5, 364173156), (6, 303477630), (9, 202318420), (10, 182086578), (12, 151738815), (15, 121391052), (18, 101159210), (20, 91043289), (30, 60695526), (36, 50579605), (45, 40463684), (60, 30347763), (90, 20231842), (180, 10115921), (353, 5158260), (706, 2579130), (1059, 1719420), (1412, 1289565), (1765, 1031652), (2118, 859710), (3177, 573140), (3530, 515826), (4236, 429855), (5295, 343884), (6354, 286570), (7060, 257913), (10590, 171942), (12708, 143285), (15885, 114628), (21180, 85971), (28657, 63540), (31770, 57314)]