80872820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{239}}^1\times {\mathrm{2417}}^1$

素因数の和:2672

約数の個数: 48

約数和(自身を含む): 194987520

約数和(自身を除く): 114114700

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 239, 478, 956, 1195, 1673, 2390, 2417, 3346, 4780, 4834, 6692, 8365, 9668, 12085, 16730, 16919, 24170, 33460, 33838, 48340, 67676, 84595, 169190, 338380, 577663, 1155326, 2310652, 2888315, 4043641, 5776630, 8087282, 11553260, 16174564, 20218205, 40436410, 80872820]

約数ペア:

[(1, 80872820), (2, 40436410), (4, 20218205), (5, 16174564), (7, 11553260), (10, 8087282), (14, 5776630), (20, 4043641), (28, 2888315), (35, 2310652), (70, 1155326), (140, 577663), (239, 338380), (478, 169190), (956, 84595), (1195, 67676), (1673, 48340), (2390, 33838), (2417, 33460), (3346, 24170), (4780, 16919), (4834, 16730), (6692, 12085), (8365, 9668)]