21768976

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{163}}^1\times {\mathrm{491}}^1$

素因数の和:679

約数の個数: 40

約数和(自身を含む): 45023904

約数和(自身を除く): 23254928

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 163, 272, 326, 491, 652, 982, 1304, 1964, 2608, 2771, 3928, 5542, 7856, 8347, 11084, 16694, 22168, 33388, 44336, 66776, 80033, 133552, 160066, 320132, 640264, 1280528, 1360561, 2721122, 5442244, 10884488, 21768976]

約数ペア:

[(1, 21768976), (2, 10884488), (4, 5442244), (8, 2721122), (16, 1360561), (17, 1280528), (34, 640264), (68, 320132), (136, 160066), (163, 133552), (272, 80033), (326, 66776), (491, 44336), (652, 33388), (982, 22168), (1304, 16694), (1964, 11084), (2608, 8347), (2771, 7856), (3928, 5542)]