21372500

素因数分解:

$2^2\times 5^4\times {\mathrm{83}}^1\times {\mathrm{103}}^1$

素因数の和:210

約数の個数: 60

約数和(自身を含む): 47759712

約数和(自身を除く): 26387212

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 83, 100, 103, 125, 166, 206, 250, 332, 412, 415, 500, 515, 625, 830, 1030, 1250, 1660, 2060, 2075, 2500, 2575, 4150, 5150, 8300, 8549, 10300, 10375, 12875, 17098, 20750, 25750, 34196, 41500, 42745, 51500, 51875, 64375, 85490, 103750, 128750, 170980, 207500, 213725, 257500, 427450, 854900, 1068625, 2137250, 4274500, 5343125, 10686250, 21372500]

約数ペア:

[(1, 21372500), (2, 10686250), (4, 5343125), (5, 4274500), (10, 2137250), (20, 1068625), (25, 854900), (50, 427450), (83, 257500), (100, 213725), (103, 207500), (125, 170980), (166, 128750), (206, 103750), (250, 85490), (332, 64375), (412, 51875), (415, 51500), (500, 42745), (515, 41500), (625, 34196), (830, 25750), (1030, 20750), (1250, 17098), (1660, 12875), (2060, 10375), (2075, 10300), (2500, 8549), (2575, 8300), (4150, 5150)]