18722900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{3821}}^1$

素因数の和:3849

約数の個数: 54

約数和(自身を含む): 47274318

約数和(自身を除く): 28551418

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 3821, 4900, 7642, 15284, 19105, 26747, 38210, 53494, 76420, 95525, 106988, 133735, 187229, 191050, 267470, 374458, 382100, 534940, 668675, 748916, 936145, 1337350, 1872290, 2674700, 3744580, 4680725, 9361450, 18722900]

約数ペア:

[(1, 18722900), (2, 9361450), (4, 4680725), (5, 3744580), (7, 2674700), (10, 1872290), (14, 1337350), (20, 936145), (25, 748916), (28, 668675), (35, 534940), (49, 382100), (50, 374458), (70, 267470), (98, 191050), (100, 187229), (140, 133735), (175, 106988), (196, 95525), (245, 76420), (350, 53494), (490, 38210), (700, 26747), (980, 19105), (1225, 15284), (2450, 7642), (3821, 4900)]