21407640

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{178397}}^1$

素因数の和:178411

約数の個数: 32

約数和(自身を含む): 64223280

約数和(自身を除く): 42815640

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 178397, 356794, 535191, 713588, 891985, 1070382, 1427176, 1783970, 2140764, 2675955, 3567940, 4281528, 5351910, 7135880, 10703820, 21407640]

約数ペア:

[(1, 21407640), (2, 10703820), (3, 7135880), (4, 5351910), (5, 4281528), (6, 3567940), (8, 2675955), (10, 2140764), (12, 1783970), (15, 1427176), (20, 1070382), (24, 891985), (30, 713588), (40, 535191), (60, 356794), (120, 178397)]