21872885

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{4639}}^1$

素因数の和:4708

約数の個数: 16

約数和(自身を含む): 28062720

約数和(自身を除く): 6189835

約数列:

[1, 5, 23, 41, 115, 205, 943, 4639, 4715, 23195, 106697, 190199, 533485, 950995, 4374577, 21872885]

約数ペア:

[(1, 21872885), (5, 4374577), (23, 950995), (41, 533485), (115, 190199), (205, 106697), (943, 23195), (4639, 4715)]