20512625

素因数分解:

$5^3\times 7^2\times {\mathrm{17}}^1\times {\mathrm{197}}^1$

素因数の和:243

約数の個数: 48

約数和(自身を含む): 31691088

約数和(自身を除く): 11178463

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 125, 175, 197, 245, 425, 595, 833, 875, 985, 1225, 1379, 2125, 2975, 3349, 4165, 4925, 6125, 6895, 9653, 14875, 16745, 20825, 23443, 24625, 34475, 48265, 83725, 104125, 117215, 164101, 172375, 241325, 418625, 586075, 820505, 1206625, 2930375, 4102525, 20512625]

約数ペア:

[(1, 20512625), (5, 4102525), (7, 2930375), (17, 1206625), (25, 820505), (35, 586075), (49, 418625), (85, 241325), (119, 172375), (125, 164101), (175, 117215), (197, 104125), (245, 83725), (425, 48265), (595, 34475), (833, 24625), (875, 23443), (985, 20825), (1225, 16745), (1379, 14875), (2125, 9653), (2975, 6895), (3349, 6125), (4165, 4925)]