81349980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{31531}}^1$

素因数の和:31586

約数の個数: 48

約数和(自身を含む): 233084544

約数和(自身を除く): 151734564

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 86, 129, 172, 215, 258, 430, 516, 645, 860, 1290, 2580, 31531, 63062, 94593, 126124, 157655, 189186, 315310, 378372, 472965, 630620, 945930, 1355833, 1891860, 2711666, 4067499, 5423332, 6779165, 8134998, 13558330, 16269996, 20337495, 27116660, 40674990, 81349980]

約数ペア:

[(1, 81349980), (2, 40674990), (3, 27116660), (4, 20337495), (5, 16269996), (6, 13558330), (10, 8134998), (12, 6779165), (15, 5423332), (20, 4067499), (30, 2711666), (43, 1891860), (60, 1355833), (86, 945930), (129, 630620), (172, 472965), (215, 378372), (258, 315310), (430, 189186), (516, 157655), (645, 126124), (860, 94593), (1290, 63062), (2580, 31531)]