21077406

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{409}}^2$

素因数の和:833

約数の個数: 36

約数和(自身を含む): 52319592

約数和(自身を除く): 31242186

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126, 409, 818, 1227, 2454, 2863, 3681, 5726, 7362, 8589, 17178, 25767, 51534, 167281, 334562, 501843, 1003686, 1170967, 1505529, 2341934, 3011058, 3512901, 7025802, 10538703, 21077406]

約数ペア:

[(1, 21077406), (2, 10538703), (3, 7025802), (6, 3512901), (7, 3011058), (9, 2341934), (14, 1505529), (18, 1170967), (21, 1003686), (42, 501843), (63, 334562), (126, 167281), (409, 51534), (818, 25767), (1227, 17178), (2454, 8589), (2863, 7362), (3681, 5726)]