18685000

素因数分解:

$2^3\times 5^4\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:164

約数の個数: 80

約数和(自身を含む): 45407340

約数和(自身を除く): 26722340

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 37, 40, 50, 74, 100, 101, 125, 148, 185, 200, 202, 250, 296, 370, 404, 500, 505, 625, 740, 808, 925, 1000, 1010, 1250, 1480, 1850, 2020, 2500, 2525, 3700, 3737, 4040, 4625, 5000, 5050, 7400, 7474, 9250, 10100, 12625, 14948, 18500, 18685, 20200, 23125, 25250, 29896, 37000, 37370, 46250, 50500, 63125, 74740, 92500, 93425, 101000, 126250, 149480, 185000, 186850, 252500, 373700, 467125, 505000, 747400, 934250, 1868500, 2335625, 3737000, 4671250, 9342500, 18685000]

約数ペア:

[(1, 18685000), (2, 9342500), (4, 4671250), (5, 3737000), (8, 2335625), (10, 1868500), (20, 934250), (25, 747400), (37, 505000), (40, 467125), (50, 373700), (74, 252500), (100, 186850), (101, 185000), (125, 149480), (148, 126250), (185, 101000), (200, 93425), (202, 92500), (250, 74740), (296, 63125), (370, 50500), (404, 46250), (500, 37370), (505, 37000), (625, 29896), (740, 25250), (808, 23125), (925, 20200), (1000, 18685), (1010, 18500), (1250, 14948), (1480, 12625), (1850, 10100), (2020, 9250), (2500, 7474), (2525, 7400), (3700, 5050), (3737, 5000), (4040, 4625)]