181998880

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{162499}}^1$

素因数の和:162521

約数の個数: 48

約数和(自身を含む): 491400000

約数和(自身を除く): 309401120

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 162499, 324998, 649996, 812495, 1137493, 1299992, 1624990, 2274986, 2599984, 3249980, 4549972, 5199968, 5687465, 6499960, 9099944, 11374930, 12999920, 18199888, 22749860, 25999840, 36399776, 45499720, 90999440, 181998880]

約数ペア:

[(1, 181998880), (2, 90999440), (4, 45499720), (5, 36399776), (7, 25999840), (8, 22749860), (10, 18199888), (14, 12999920), (16, 11374930), (20, 9099944), (28, 6499960), (32, 5687465), (35, 5199968), (40, 4549972), (56, 3249980), (70, 2599984), (80, 2274986), (112, 1624990), (140, 1299992), (160, 1137493), (224, 812495), (280, 649996), (560, 324998), (1120, 162499)]