19989375

素因数分解:

$3^1\times 5^4\times 7^1\times {\mathrm{1523}}^1$

素因数の和:1553

約数の個数: 40

約数和(自身を含む): 38087808

約数和(自身を除く): 18098433

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 125, 175, 375, 525, 625, 875, 1523, 1875, 2625, 4375, 4569, 7615, 10661, 13125, 22845, 31983, 38075, 53305, 114225, 159915, 190375, 266525, 571125, 799575, 951875, 1332625, 2855625, 3997875, 6663125, 19989375]

約数ペア:

[(1, 19989375), (3, 6663125), (5, 3997875), (7, 2855625), (15, 1332625), (21, 951875), (25, 799575), (35, 571125), (75, 266525), (105, 190375), (125, 159915), (175, 114225), (375, 53305), (525, 38075), (625, 31983), (875, 22845), (1523, 13125), (1875, 10661), (2625, 7615), (4375, 4569)]