21144578

素因数分解:

$2^1\times 7^3\times {\mathrm{13}}^1\times {\mathrm{2371}}^1$

素因数の和:2407

約数の個数: 32

約数和(自身を含む): 39849600

約数和(自身を除く): 18705022

約数列:

[1, 2, 7, 13, 14, 26, 49, 91, 98, 182, 343, 637, 686, 1274, 2371, 4459, 4742, 8918, 16597, 30823, 33194, 61646, 116179, 215761, 232358, 431522, 813253, 1510327, 1626506, 3020654, 10572289, 21144578]

約数ペア:

[(1, 21144578), (2, 10572289), (7, 3020654), (13, 1626506), (14, 1510327), (26, 813253), (49, 431522), (91, 232358), (98, 215761), (182, 116179), (343, 61646), (637, 33194), (686, 30823), (1274, 16597), (2371, 8918), (4459, 4742)]