31000

素因数分解:

$2^3\times 5^3\times {\mathrm{31}}^1$

素因数の和:52

約数の個数: 32

約数和(自身を含む): 74880

約数和(自身を除く): 43880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 50, 62, 100, 124, 125, 155, 200, 248, 250, 310, 500, 620, 775, 1000, 1240, 1550, 3100, 3875, 6200, 7750, 15500, 31000]

約数ペア:

[(1, 31000), (2, 15500), (4, 7750), (5, 6200), (8, 3875), (10, 3100), (20, 1550), (25, 1240), (31, 1000), (40, 775), (50, 620), (62, 500), (100, 310), (124, 250), (125, 248), (155, 200)]