18884720

素因数分解:

$2^4\times 5^1\times {\mathrm{59}}^1\times {\mathrm{4001}}^1$

素因数の和:4073

約数の個数: 40

約数和(自身を含む): 44662320

約数和(自身を除く): 25777600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 59, 80, 118, 236, 295, 472, 590, 944, 1180, 2360, 4001, 4720, 8002, 16004, 20005, 32008, 40010, 64016, 80020, 160040, 236059, 320080, 472118, 944236, 1180295, 1888472, 2360590, 3776944, 4721180, 9442360, 18884720]

約数ペア:

[(1, 18884720), (2, 9442360), (4, 4721180), (5, 3776944), (8, 2360590), (10, 1888472), (16, 1180295), (20, 944236), (40, 472118), (59, 320080), (80, 236059), (118, 160040), (236, 80020), (295, 64016), (472, 40010), (590, 32008), (944, 20005), (1180, 16004), (2360, 8002), (4001, 4720)]