21256410

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{101221}}^1$

素因数の和:101238

約数の個数: 32

約数和(自身を含む): 58303872

約数和(自身を除く): 37047462

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 210, 101221, 202442, 303663, 506105, 607326, 708547, 1012210, 1417094, 1518315, 2125641, 3036630, 3542735, 4251282, 7085470, 10628205, 21256410]

約数ペア:

[(1, 21256410), (2, 10628205), (3, 7085470), (5, 4251282), (6, 3542735), (7, 3036630), (10, 2125641), (14, 1518315), (15, 1417094), (21, 1012210), (30, 708547), (35, 607326), (42, 506105), (70, 303663), (105, 202442), (210, 101221)]