21876723

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{571}}^1$

素因数の和:637

約数の個数: 40

約数和(自身を含む): 36543936

約数和(自身を除く): 14667213

約数列:

[1, 3, 9, 11, 27, 33, 43, 81, 99, 129, 297, 387, 473, 571, 891, 1161, 1419, 1713, 3483, 4257, 5139, 6281, 12771, 15417, 18843, 24553, 38313, 46251, 56529, 73659, 169587, 220977, 270083, 508761, 662931, 810249, 1988793, 2430747, 7292241, 21876723]

約数ペア:

[(1, 21876723), (3, 7292241), (9, 2430747), (11, 1988793), (27, 810249), (33, 662931), (43, 508761), (81, 270083), (99, 220977), (129, 169587), (297, 73659), (387, 56529), (473, 46251), (571, 38313), (891, 24553), (1161, 18843), (1419, 15417), (1713, 12771), (3483, 6281), (4257, 5139)]