40010000

素因数分解:

$2^4\times 5^4\times {\mathrm{4001}}^1$

素因数の和:4029

約数の個数: 50

約数和(自身を含む): 96892422

約数和(自身を除く): 56882422

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 125, 200, 250, 400, 500, 625, 1000, 1250, 2000, 2500, 4001, 5000, 8002, 10000, 16004, 20005, 32008, 40010, 64016, 80020, 100025, 160040, 200050, 320080, 400100, 500125, 800200, 1000250, 1600400, 2000500, 2500625, 4001000, 5001250, 8002000, 10002500, 20005000, 40010000]

約数ペア:

[(1, 40010000), (2, 20005000), (4, 10002500), (5, 8002000), (8, 5001250), (10, 4001000), (16, 2500625), (20, 2000500), (25, 1600400), (40, 1000250), (50, 800200), (80, 500125), (100, 400100), (125, 320080), (200, 200050), (250, 160040), (400, 100025), (500, 80020), (625, 64016), (1000, 40010), (1250, 32008), (2000, 20005), (2500, 16004), (4001, 10000), (5000, 8002)]