21681180

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{5237}}^1$

素因数の和:5275

約数の個数: 72

約数和(自身を含む): 68638752

約数和(自身を除く): 46957572

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 23, 30, 36, 45, 46, 60, 69, 90, 92, 115, 138, 180, 207, 230, 276, 345, 414, 460, 690, 828, 1035, 1380, 2070, 4140, 5237, 10474, 15711, 20948, 26185, 31422, 47133, 52370, 62844, 78555, 94266, 104740, 120451, 157110, 188532, 235665, 240902, 314220, 361353, 471330, 481804, 602255, 722706, 942660, 1084059, 1204510, 1445412, 1806765, 2168118, 2409020, 3613530, 4336236, 5420295, 7227060, 10840590, 21681180]

約数ペア:

[(1, 21681180), (2, 10840590), (3, 7227060), (4, 5420295), (5, 4336236), (6, 3613530), (9, 2409020), (10, 2168118), (12, 1806765), (15, 1445412), (18, 1204510), (20, 1084059), (23, 942660), (30, 722706), (36, 602255), (45, 481804), (46, 471330), (60, 361353), (69, 314220), (90, 240902), (92, 235665), (115, 188532), (138, 157110), (180, 120451), (207, 104740), (230, 94266), (276, 78555), (345, 62844), (414, 52370), (460, 47133), (690, 31422), (828, 26185), (1035, 20948), (1380, 15711), (2070, 10474), (4140, 5237)]