19693443

素因数分解:

$3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{641}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 35130240

約数和(自身を除く): 15436797

約数列:

[1, 3, 7, 11, 19, 21, 33, 49, 57, 77, 133, 147, 209, 231, 399, 539, 627, 641, 931, 1463, 1617, 1923, 2793, 4389, 4487, 7051, 10241, 12179, 13461, 21153, 30723, 31409, 36537, 49357, 85253, 94227, 133969, 148071, 255759, 345499, 401907, 596771, 937783, 1036497, 1790313, 2813349, 6564481, 19693443]

約数ペア:

[(1, 19693443), (3, 6564481), (7, 2813349), (11, 1790313), (19, 1036497), (21, 937783), (33, 596771), (49, 401907), (57, 345499), (77, 255759), (133, 148071), (147, 133969), (209, 94227), (231, 85253), (399, 49357), (539, 36537), (627, 31409), (641, 30723), (931, 21153), (1463, 13461), (1617, 12179), (1923, 10241), (2793, 7051), (4389, 4487)]