20404300

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:407

約数の個数: 72

約数和(自身を含む): 51274496

約数和(自身を除く): 30870196

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 103, 140, 175, 206, 283, 350, 412, 515, 566, 700, 721, 1030, 1132, 1415, 1442, 1981, 2060, 2575, 2830, 2884, 3605, 3962, 5150, 5660, 7075, 7210, 7924, 9905, 10300, 14150, 14420, 18025, 19810, 28300, 29149, 36050, 39620, 49525, 58298, 72100, 99050, 116596, 145745, 198100, 204043, 291490, 408086, 582980, 728725, 816172, 1020215, 1457450, 2040430, 2914900, 4080860, 5101075, 10202150, 20404300]

約数ペア:

[(1, 20404300), (2, 10202150), (4, 5101075), (5, 4080860), (7, 2914900), (10, 2040430), (14, 1457450), (20, 1020215), (25, 816172), (28, 728725), (35, 582980), (50, 408086), (70, 291490), (100, 204043), (103, 198100), (140, 145745), (175, 116596), (206, 99050), (283, 72100), (350, 58298), (412, 49525), (515, 39620), (566, 36050), (700, 29149), (721, 28300), (1030, 19810), (1132, 18025), (1415, 14420), (1442, 14150), (1981, 10300), (2060, 9905), (2575, 7924), (2830, 7210), (2884, 7075), (3605, 5660), (3962, 5150)]