21523750

素因数分解:

$2^1\times 5^4\times {\mathrm{67}}^1\times {\mathrm{257}}^1$

素因数の和:346

約数の個数: 40

約数和(自身を含む): 41105592

約数和(自身を除く): 19581842

約数列:

[1, 2, 5, 10, 25, 50, 67, 125, 134, 250, 257, 335, 514, 625, 670, 1250, 1285, 1675, 2570, 3350, 6425, 8375, 12850, 16750, 17219, 32125, 34438, 41875, 64250, 83750, 86095, 160625, 172190, 321250, 430475, 860950, 2152375, 4304750, 10761875, 21523750]

約数ペア:

[(1, 21523750), (2, 10761875), (5, 4304750), (10, 2152375), (25, 860950), (50, 430475), (67, 321250), (125, 172190), (134, 160625), (250, 86095), (257, 83750), (335, 64250), (514, 41875), (625, 34438), (670, 32125), (1250, 17219), (1285, 16750), (1675, 12850), (2570, 8375), (3350, 6425)]