39909975

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{4001}}^1$

素因数の和:4040

約数の個数: 48

約数和(自身を含む): 79399680

約数和(自身を除く): 39489705

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 35, 57, 75, 95, 105, 133, 175, 285, 399, 475, 525, 665, 1425, 1995, 3325, 4001, 9975, 12003, 20005, 28007, 60015, 76019, 84021, 100025, 140035, 228057, 300075, 380095, 420105, 532133, 700175, 1140285, 1596399, 1900475, 2100525, 2660665, 5701425, 7981995, 13303325, 39909975]

約数ペア:

[(1, 39909975), (3, 13303325), (5, 7981995), (7, 5701425), (15, 2660665), (19, 2100525), (21, 1900475), (25, 1596399), (35, 1140285), (57, 700175), (75, 532133), (95, 420105), (105, 380095), (133, 300075), (175, 228057), (285, 140035), (399, 100025), (475, 84021), (525, 76019), (665, 60015), (1425, 28007), (1995, 20005), (3325, 12003), (4001, 9975)]