21688623

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{191}}^1$

素因数の和:276

約数の個数: 48

約数和(自身を含む): 36421632

約数和(自身を除く): 14733009

約数列:

[1, 3, 9, 11, 31, 33, 37, 93, 99, 111, 191, 279, 333, 341, 407, 573, 1023, 1147, 1221, 1719, 2101, 3069, 3441, 3663, 5921, 6303, 7067, 10323, 12617, 17763, 18909, 21201, 37851, 53289, 63603, 65131, 77737, 113553, 195393, 219077, 233211, 586179, 657231, 699633, 1971693, 2409847, 7229541, 21688623]

約数ペア:

[(1, 21688623), (3, 7229541), (9, 2409847), (11, 1971693), (31, 699633), (33, 657231), (37, 586179), (93, 233211), (99, 219077), (111, 195393), (191, 113553), (279, 77737), (333, 65131), (341, 63603), (407, 53289), (573, 37851), (1023, 21201), (1147, 18909), (1221, 17763), (1719, 12617), (2101, 10323), (3069, 7067), (3441, 6303), (3663, 5921)]