21553948

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{457}}^1\times {\mathrm{907}}^1$

素因数の和:1381

約数の個数: 24

約数和(自身を含む): 40754672

約数和(自身を除く): 19200724

約数列:

[1, 2, 4, 13, 26, 52, 457, 907, 914, 1814, 1828, 3628, 5941, 11791, 11882, 23582, 23764, 47164, 414499, 828998, 1657996, 5388487, 10776974, 21553948]

約数ペア:

[(1, 21553948), (2, 10776974), (4, 5388487), (13, 1657996), (26, 828998), (52, 414499), (457, 47164), (907, 23764), (914, 23582), (1814, 11882), (1828, 11791), (3628, 5941)]