217896660

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{647}}^1\times {\mathrm{1871}}^1$

素因数の和:2533

約数の個数: 72

約数和(自身を含む): 662328576

約数和(自身を除く): 444431916

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 647, 1294, 1871, 1941, 2588, 3235, 3742, 3882, 5613, 5823, 6470, 7484, 7764, 9355, 9705, 11226, 11646, 12940, 16839, 18710, 19410, 22452, 23292, 28065, 29115, 33678, 37420, 38820, 56130, 58230, 67356, 84195, 112260, 116460, 168390, 336780, 1210537, 2421074, 3631611, 4842148, 6052685, 7263222, 10894833, 12105370, 14526444, 18158055, 21789666, 24210740, 36316110, 43579332, 54474165, 72632220, 108948330, 217896660]

約数ペア:

[(1, 217896660), (2, 108948330), (3, 72632220), (4, 54474165), (5, 43579332), (6, 36316110), (9, 24210740), (10, 21789666), (12, 18158055), (15, 14526444), (18, 12105370), (20, 10894833), (30, 7263222), (36, 6052685), (45, 4842148), (60, 3631611), (90, 2421074), (180, 1210537), (647, 336780), (1294, 168390), (1871, 116460), (1941, 112260), (2588, 84195), (3235, 67356), (3742, 58230), (3882, 56130), (5613, 38820), (5823, 37420), (6470, 33678), (7484, 29115), (7764, 28065), (9355, 23292), (9705, 22452), (11226, 19410), (11646, 18710), (12940, 16839)]