21242650

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2971}}^1$

素因数の和:3007

約数の個数: 48

約数和(自身を含む): 46434528

約数和(自身を除く): 25191878

約数列:

[1, 2, 5, 10, 11, 13, 22, 25, 26, 50, 55, 65, 110, 130, 143, 275, 286, 325, 550, 650, 715, 1430, 2971, 3575, 5942, 7150, 14855, 29710, 32681, 38623, 65362, 74275, 77246, 148550, 163405, 193115, 326810, 386230, 424853, 817025, 849706, 965575, 1634050, 1931150, 2124265, 4248530, 10621325, 21242650]

約数ペア:

[(1, 21242650), (2, 10621325), (5, 4248530), (10, 2124265), (11, 1931150), (13, 1634050), (22, 965575), (25, 849706), (26, 817025), (50, 424853), (55, 386230), (65, 326810), (110, 193115), (130, 163405), (143, 148550), (275, 77246), (286, 74275), (325, 65362), (550, 38623), (650, 32681), (715, 29710), (1430, 14855), (2971, 7150), (3575, 5942)]