31720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1$

素因数の和:85

約数の個数: 32

約数和(自身を含む): 78120

約数和(自身を除く): 46400

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 61, 65, 104, 122, 130, 244, 260, 305, 488, 520, 610, 793, 1220, 1586, 2440, 3172, 3965, 6344, 7930, 15860, 31720]

約数ペア:

[(1, 31720), (2, 15860), (4, 7930), (5, 6344), (8, 3965), (10, 3172), (13, 2440), (20, 1586), (26, 1220), (40, 793), (52, 610), (61, 520), (65, 488), (104, 305), (122, 260), (130, 244)]