21357518

素因数分解:

$2^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{491}}^1$

素因数の和:752

約数の個数: 32

約数和(自身を含む): 39674880

約数和(自身を除く): 18317362

約数列:

[1, 2, 7, 13, 14, 26, 91, 182, 239, 478, 491, 982, 1673, 3107, 3346, 3437, 6214, 6383, 6874, 12766, 21749, 43498, 44681, 89362, 117349, 234698, 821443, 1525537, 1642886, 3051074, 10678759, 21357518]

約数ペア:

[(1, 21357518), (2, 10678759), (7, 3051074), (13, 1642886), (14, 1525537), (26, 821443), (91, 234698), (182, 117349), (239, 89362), (478, 44681), (491, 43498), (982, 21749), (1673, 12766), (3107, 6874), (3346, 6383), (3437, 6214)]