21099625

素因数分解:

$5^3\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{179}}^1$

素因数の和:258

約数の個数: 32

約数和(自身を含む): 28304640

約数和(自身を除く): 7205015

約数列:

[1, 5, 23, 25, 41, 115, 125, 179, 205, 575, 895, 943, 1025, 2875, 4117, 4475, 4715, 5125, 7339, 20585, 22375, 23575, 36695, 102925, 117875, 168797, 183475, 514625, 843985, 917375, 4219925, 21099625]

約数ペア:

[(1, 21099625), (5, 4219925), (23, 917375), (25, 843985), (41, 514625), (115, 183475), (125, 168797), (179, 117875), (205, 102925), (575, 36695), (895, 23575), (943, 22375), (1025, 20585), (2875, 7339), (4117, 5125), (4475, 4715)]