78631980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{187219}}^1$

素因数の和:187238

約数の個数: 48

約数和(自身を含む): 251623680

約数和(自身を除く): 172991700

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, 187219, 374438, 561657, 748876, 936095, 1123314, 1310533, 1872190, 2246628, 2621066, 2808285, 3744380, 3931599, 5242132, 5616570, 6552665, 7863198, 11233140, 13105330, 15726396, 19657995, 26210660, 39315990, 78631980]

約数ペア:

[(1, 78631980), (2, 39315990), (3, 26210660), (4, 19657995), (5, 15726396), (6, 13105330), (7, 11233140), (10, 7863198), (12, 6552665), (14, 5616570), (15, 5242132), (20, 3931599), (21, 3744380), (28, 2808285), (30, 2621066), (35, 2246628), (42, 1872190), (60, 1310533), (70, 1123314), (84, 936095), (105, 748876), (140, 561657), (210, 374438), (420, 187219)]