21390816

素因数分解:

$2^5\times 3^1\times {\mathrm{163}}^1\times {\mathrm{1367}}^1$

素因数の和:1543

約数の個数: 48

約数和(自身を含む): 56536704

約数和(自身を除く): 35145888

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 96, 163, 326, 489, 652, 978, 1304, 1367, 1956, 2608, 2734, 3912, 4101, 5216, 5468, 7824, 8202, 10936, 15648, 16404, 21872, 32808, 43744, 65616, 131232, 222821, 445642, 668463, 891284, 1336926, 1782568, 2673852, 3565136, 5347704, 7130272, 10695408, 21390816]

約数ペア:

[(1, 21390816), (2, 10695408), (3, 7130272), (4, 5347704), (6, 3565136), (8, 2673852), (12, 1782568), (16, 1336926), (24, 891284), (32, 668463), (48, 445642), (96, 222821), (163, 131232), (326, 65616), (489, 43744), (652, 32808), (978, 21872), (1304, 16404), (1367, 15648), (1956, 10936), (2608, 8202), (2734, 7824), (3912, 5468), (4101, 5216)]