21483140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{173}}^1\times {\mathrm{887}}^1$

素因数の和:1076

約数の個数: 48

約数和(自身を含む): 51916032

約数和(自身を除く): 30432892

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 173, 346, 692, 865, 887, 1211, 1730, 1774, 2422, 3460, 3548, 4435, 4844, 6055, 6209, 8870, 12110, 12418, 17740, 24220, 24836, 31045, 62090, 124180, 153451, 306902, 613804, 767255, 1074157, 1534510, 2148314, 3069020, 4296628, 5370785, 10741570, 21483140]

約数ペア:

[(1, 21483140), (2, 10741570), (4, 5370785), (5, 4296628), (7, 3069020), (10, 2148314), (14, 1534510), (20, 1074157), (28, 767255), (35, 613804), (70, 306902), (140, 153451), (173, 124180), (346, 62090), (692, 31045), (865, 24836), (887, 24220), (1211, 17740), (1730, 12418), (1774, 12110), (2422, 8870), (3460, 6209), (3548, 6055), (4435, 4844)]