20957000

素因数分解:

$2^3\times 5^3\times {\mathrm{19}}^1\times {\mathrm{1103}}^1$

素因数の和:1143

約数の個数: 64

約数和(自身を含む): 51667200

約数和(自身を除く): 30710200

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 25, 38, 40, 50, 76, 95, 100, 125, 152, 190, 200, 250, 380, 475, 500, 760, 950, 1000, 1103, 1900, 2206, 2375, 3800, 4412, 4750, 5515, 8824, 9500, 11030, 19000, 20957, 22060, 27575, 41914, 44120, 55150, 83828, 104785, 110300, 137875, 167656, 209570, 220600, 275750, 419140, 523925, 551500, 838280, 1047850, 1103000, 2095700, 2619625, 4191400, 5239250, 10478500, 20957000]

約数ペア:

[(1, 20957000), (2, 10478500), (4, 5239250), (5, 4191400), (8, 2619625), (10, 2095700), (19, 1103000), (20, 1047850), (25, 838280), (38, 551500), (40, 523925), (50, 419140), (76, 275750), (95, 220600), (100, 209570), (125, 167656), (152, 137875), (190, 110300), (200, 104785), (250, 83828), (380, 55150), (475, 44120), (500, 41914), (760, 27575), (950, 22060), (1000, 20957), (1103, 19000), (1900, 11030), (2206, 9500), (2375, 8824), (3800, 5515), (4412, 4750)]