20393850

素因数分解:

$2^1\times 3^1\times 5^2\times {\mathrm{79}}^1\times {\mathrm{1721}}^1$

素因数の和:1815

約数の個数: 48

約数和(自身を含む): 51246720

約数和(自身を除く): 30852870

約数列:

[1, 2, 3, 5, 6, 10, 15, 25, 30, 50, 75, 79, 150, 158, 237, 395, 474, 790, 1185, 1721, 1975, 2370, 3442, 3950, 5163, 5925, 8605, 10326, 11850, 17210, 25815, 43025, 51630, 86050, 129075, 135959, 258150, 271918, 407877, 679795, 815754, 1359590, 2039385, 3398975, 4078770, 6797950, 10196925, 20393850]

約数ペア:

[(1, 20393850), (2, 10196925), (3, 6797950), (5, 4078770), (6, 3398975), (10, 2039385), (15, 1359590), (25, 815754), (30, 679795), (50, 407877), (75, 271918), (79, 258150), (150, 135959), (158, 129075), (237, 86050), (395, 51630), (474, 43025), (790, 25815), (1185, 17210), (1721, 11850), (1975, 10326), (2370, 8605), (3442, 5925), (3950, 5163)]