28651980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{68219}}^1$

素因数の和:68238

約数の個数: 48

約数和(自身を含む): 91687680

約数和(自身を除く): 63035700

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 68219, 136438, 204657, 272876, 341095, 409314, 477533, 682190, 818628, 955066, 1023285, 1364380, 1432599, 1910132, 2046570, 2387665, 2865198, 4093140, 4775330, 5730396, 7162995, 9550660, 14325990, 28651980]

約数ペア:

[(1, 28651980), (2, 14325990), (3, 9550660), (4, 7162995), (5, 5730396), (6, 4775330), (7, 4093140), (10, 2865198), (12, 2387665), (14, 2046570), (15, 1910132), (20, 1432599), (21, 1364380), (28, 1023285), (30, 955066), (35, 818628), (42, 682190), (60, 477533), (70, 409314), (84, 341095), (105, 272876), (140, 204657), (210, 136438), (420, 68219)]