21718886

素因数分解:

$2^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{6491}}^1$

素因数の和:6739

約数の個数: 16

約数和(自身を含む): 37393920

約数和(自身を除く): 15675034

約数列:

[1, 2, 7, 14, 239, 478, 1673, 3346, 6491, 12982, 45437, 90874, 1551349, 3102698, 10859443, 21718886]

約数ペア:

[(1, 21718886), (2, 10859443), (7, 3102698), (14, 1551349), (239, 90874), (478, 45437), (1673, 12982), (3346, 6491)]