16620625

素因数分解:

$5^4\times 7^1\times {\mathrm{29}}^1\times {\mathrm{131}}^1$

素因数の和:187

約数の個数: 40

約数和(自身を含む): 24742080

約数和(自身を除く): 8121455

約数列:

[1, 5, 7, 25, 29, 35, 125, 131, 145, 175, 203, 625, 655, 725, 875, 917, 1015, 3275, 3625, 3799, 4375, 4585, 5075, 16375, 18125, 18995, 22925, 25375, 26593, 81875, 94975, 114625, 126875, 132965, 474875, 573125, 664825, 2374375, 3324125, 16620625]

約数ペア:

[(1, 16620625), (5, 3324125), (7, 2374375), (25, 664825), (29, 573125), (35, 474875), (125, 132965), (131, 126875), (145, 114625), (175, 94975), (203, 81875), (625, 26593), (655, 25375), (725, 22925), (875, 18995), (917, 18125), (1015, 16375), (3275, 5075), (3625, 4585), (3799, 4375)]