25513930

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1\times {\mathrm{487}}^1$

素因数の和:551

約数の個数: 48

約数和(自身を含む): 51439104

約数和(自身を除く): 25925174

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 169, 310, 338, 403, 487, 806, 845, 974, 1690, 2015, 2435, 4030, 4870, 5239, 6331, 10478, 12662, 15097, 26195, 30194, 31655, 52390, 63310, 75485, 82303, 150970, 164606, 196261, 392522, 411515, 823030, 981305, 1962610, 2551393, 5102786, 12756965, 25513930]

約数ペア:

[(1, 25513930), (2, 12756965), (5, 5102786), (10, 2551393), (13, 1962610), (26, 981305), (31, 823030), (62, 411515), (65, 392522), (130, 196261), (155, 164606), (169, 150970), (310, 82303), (338, 75485), (403, 63310), (487, 52390), (806, 31655), (845, 30194), (974, 26195), (1690, 15097), (2015, 12662), (2435, 10478), (4030, 6331), (4870, 5239)]