21190428

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{84089}}^1$

素因数の和:84106

約数の個数: 36

約数和(自身を含む): 61217520

約数和(自身を除く): 40027092

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 84089, 168178, 252267, 336356, 504534, 588623, 756801, 1009068, 1177246, 1513602, 1765869, 2354492, 3027204, 3531738, 5297607, 7063476, 10595214, 21190428]

約数ペア:

[(1, 21190428), (2, 10595214), (3, 7063476), (4, 5297607), (6, 3531738), (7, 3027204), (9, 2354492), (12, 1765869), (14, 1513602), (18, 1177246), (21, 1009068), (28, 756801), (36, 588623), (42, 504534), (63, 336356), (84, 252267), (126, 168178), (252, 84089)]