21006284

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{613}}^1\times {\mathrm{659}}^1$

素因数の和:1289

約数の個数: 24

約数和(自身を含む): 39713520

約数和(自身を除く): 18707236

約数列:

[1, 2, 4, 13, 26, 52, 613, 659, 1226, 1318, 2452, 2636, 7969, 8567, 15938, 17134, 31876, 34268, 403967, 807934, 1615868, 5251571, 10503142, 21006284]

約数ペア:

[(1, 21006284), (2, 10503142), (4, 5251571), (13, 1615868), (26, 807934), (52, 403967), (613, 34268), (659, 31876), (1226, 17134), (1318, 15938), (2452, 8567), (2636, 7969)]