418831980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{997219}}^1$

素因数の和:997238

約数の個数: 48

約数和(自身を含む): 1340263680

約数和(自身を除く): 921431700

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, 997219, 1994438, 2991657, 3988876, 4986095, 5983314, 6980533, 9972190, 11966628, 13961066, 14958285, 19944380, 20941599, 27922132, 29916570, 34902665, 41883198, 59833140, 69805330, 83766396, 104707995, 139610660, 209415990, 418831980]

約数ペア:

[(1, 418831980), (2, 209415990), (3, 139610660), (4, 104707995), (5, 83766396), (6, 69805330), (7, 59833140), (10, 41883198), (12, 34902665), (14, 29916570), (15, 27922132), (20, 20941599), (21, 19944380), (28, 14958285), (30, 13961066), (35, 11966628), (42, 9972190), (60, 6980533), (70, 5983314), (84, 4986095), (105, 3988876), (140, 2991657), (210, 1994438), (420, 997219)]