31905140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{1613}}^1$

素因数の和:1688

約数の個数: 48

約数和(自身を含む): 71584128

約数和(自身を除く): 39678988

約数列:

[1, 2, 4, 5, 10, 20, 23, 43, 46, 86, 92, 115, 172, 215, 230, 430, 460, 860, 989, 1613, 1978, 3226, 3956, 4945, 6452, 8065, 9890, 16130, 19780, 32260, 37099, 69359, 74198, 138718, 148396, 185495, 277436, 346795, 370990, 693590, 741980, 1387180, 1595257, 3190514, 6381028, 7976285, 15952570, 31905140]

約数ペア:

[(1, 31905140), (2, 15952570), (4, 7976285), (5, 6381028), (10, 3190514), (20, 1595257), (23, 1387180), (43, 741980), (46, 693590), (86, 370990), (92, 346795), (115, 277436), (172, 185495), (215, 148396), (230, 138718), (430, 74198), (460, 69359), (860, 37099), (989, 32260), (1613, 19780), (1978, 16130), (3226, 9890), (3956, 8065), (4945, 6452)]