21434260

素因数分解:

$2^2\times 5^1\times {\mathrm{53}}^1\times {\mathrm{73}}^1\times {\mathrm{277}}^1$

素因数の和:412

約数の個数: 48

約数和(自身を含む): 46657296

約数和(自身を除く): 25223036

約数列:

[1, 2, 4, 5, 10, 20, 53, 73, 106, 146, 212, 265, 277, 292, 365, 530, 554, 730, 1060, 1108, 1385, 1460, 2770, 3869, 5540, 7738, 14681, 15476, 19345, 20221, 29362, 38690, 40442, 58724, 73405, 77380, 80884, 101105, 146810, 202210, 293620, 404420, 1071713, 2143426, 4286852, 5358565, 10717130, 21434260]

約数ペア:

[(1, 21434260), (2, 10717130), (4, 5358565), (5, 4286852), (10, 2143426), (20, 1071713), (53, 404420), (73, 293620), (106, 202210), (146, 146810), (212, 101105), (265, 80884), (277, 77380), (292, 73405), (365, 58724), (530, 40442), (554, 38690), (730, 29362), (1060, 20221), (1108, 19345), (1385, 15476), (1460, 14681), (2770, 7738), (3869, 5540)]