42521000

素因数分解:

$2^3\times 5^3\times {\mathrm{101}}^1\times {\mathrm{421}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 100722960

約数和(自身を除く): 58201960

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 101, 125, 200, 202, 250, 404, 421, 500, 505, 808, 842, 1000, 1010, 1684, 2020, 2105, 2525, 3368, 4040, 4210, 5050, 8420, 10100, 10525, 12625, 16840, 20200, 21050, 25250, 42100, 42521, 50500, 52625, 84200, 85042, 101000, 105250, 170084, 210500, 212605, 340168, 421000, 425210, 850420, 1063025, 1700840, 2126050, 4252100, 5315125, 8504200, 10630250, 21260500, 42521000]

約数ペア:

[(1, 42521000), (2, 21260500), (4, 10630250), (5, 8504200), (8, 5315125), (10, 4252100), (20, 2126050), (25, 1700840), (40, 1063025), (50, 850420), (100, 425210), (101, 421000), (125, 340168), (200, 212605), (202, 210500), (250, 170084), (404, 105250), (421, 101000), (500, 85042), (505, 84200), (808, 52625), (842, 50500), (1000, 42521), (1010, 42100), (1684, 25250), (2020, 21050), (2105, 20200), (2525, 16840), (3368, 12625), (4040, 10525), (4210, 10100), (5050, 8420)]