20037500

素因数分解:

$2^2\times 5^5\times 7^1\times {\mathrm{229}}^1$

素因数の和:265

約数の個数: 72

約数和(自身を含む): 50309280

約数和(自身を除く): 30271780

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 125, 140, 175, 229, 250, 350, 458, 500, 625, 700, 875, 916, 1145, 1250, 1603, 1750, 2290, 2500, 3125, 3206, 3500, 4375, 4580, 5725, 6250, 6412, 8015, 8750, 11450, 12500, 16030, 17500, 21875, 22900, 28625, 32060, 40075, 43750, 57250, 80150, 87500, 114500, 143125, 160300, 200375, 286250, 400750, 572500, 715625, 801500, 1001875, 1431250, 2003750, 2862500, 4007500, 5009375, 10018750, 20037500]

約数ペア:

[(1, 20037500), (2, 10018750), (4, 5009375), (5, 4007500), (7, 2862500), (10, 2003750), (14, 1431250), (20, 1001875), (25, 801500), (28, 715625), (35, 572500), (50, 400750), (70, 286250), (100, 200375), (125, 160300), (140, 143125), (175, 114500), (229, 87500), (250, 80150), (350, 57250), (458, 43750), (500, 40075), (625, 32060), (700, 28625), (875, 22900), (916, 21875), (1145, 17500), (1250, 16030), (1603, 12500), (1750, 11450), (2290, 8750), (2500, 8015), (3125, 6412), (3206, 6250), (3500, 5725), (4375, 4580)]