28515880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{281}}^1$

素因数の和:394

約数の個数: 64

約数和(自身を含む): 67003200

約数和(自身を除く): 38487320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 59, 86, 118, 172, 215, 236, 281, 295, 344, 430, 472, 562, 590, 860, 1124, 1180, 1405, 1720, 2248, 2360, 2537, 2810, 5074, 5620, 10148, 11240, 12083, 12685, 16579, 20296, 24166, 25370, 33158, 48332, 50740, 60415, 66316, 82895, 96664, 101480, 120830, 132632, 165790, 241660, 331580, 483320, 663160, 712897, 1425794, 2851588, 3564485, 5703176, 7128970, 14257940, 28515880]

約数ペア:

[(1, 28515880), (2, 14257940), (4, 7128970), (5, 5703176), (8, 3564485), (10, 2851588), (20, 1425794), (40, 712897), (43, 663160), (59, 483320), (86, 331580), (118, 241660), (172, 165790), (215, 132632), (236, 120830), (281, 101480), (295, 96664), (344, 82895), (430, 66316), (472, 60415), (562, 50740), (590, 48332), (860, 33158), (1124, 25370), (1180, 24166), (1405, 20296), (1720, 16579), (2248, 12685), (2360, 12083), (2537, 11240), (2810, 10148), (5074, 5620)]