21648375

素因数分解:

$3^2\times 5^3\times 7^1\times {\mathrm{2749}}^1$

素因数の和:2777

約数の個数: 48

約数和(自身を含む): 44616000

約数和(自身を除く): 22967625

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 125, 175, 225, 315, 375, 525, 875, 1125, 1575, 2625, 2749, 7875, 8247, 13745, 19243, 24741, 41235, 57729, 68725, 96215, 123705, 173187, 206175, 288645, 343625, 481075, 618525, 865935, 1030875, 1443225, 2405375, 3092625, 4329675, 7216125, 21648375]

約数ペア:

[(1, 21648375), (3, 7216125), (5, 4329675), (7, 3092625), (9, 2405375), (15, 1443225), (21, 1030875), (25, 865935), (35, 618525), (45, 481075), (63, 343625), (75, 288645), (105, 206175), (125, 173187), (175, 123705), (225, 96215), (315, 68725), (375, 57729), (525, 41235), (875, 24741), (1125, 19243), (1575, 13745), (2625, 8247), (2749, 7875)]