213310520

素因数分解:

$2^3\times 5^1\times {\mathrm{431}}^1\times {\mathrm{12373}}^1$

素因数の和:12815

約数の個数: 32

約数和(自身を含む): 481101120

約数和(自身を除く): 267790600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 431, 862, 1724, 2155, 3448, 4310, 8620, 12373, 17240, 24746, 49492, 61865, 98984, 123730, 247460, 494920, 5332763, 10665526, 21331052, 26663815, 42662104, 53327630, 106655260, 213310520]

約数ペア:

[(1, 213310520), (2, 106655260), (4, 53327630), (5, 42662104), (8, 26663815), (10, 21331052), (20, 10665526), (40, 5332763), (431, 494920), (862, 247460), (1724, 123730), (2155, 98984), (3448, 61865), (4310, 49492), (8620, 24746), (12373, 17240)]