19818916

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1\times {\mathrm{227}}^1$

素因数の和:340

約数の個数: 48

約数和(自身を含む): 39682944

約数和(自身を除く): 19864028

約数列:

[1, 2, 4, 13, 23, 26, 46, 52, 73, 92, 146, 227, 292, 299, 454, 598, 908, 949, 1196, 1679, 1898, 2951, 3358, 3796, 5221, 5902, 6716, 10442, 11804, 16571, 20884, 21827, 33142, 43654, 66284, 67873, 87308, 135746, 215423, 271492, 381133, 430846, 762266, 861692, 1524532, 4954729, 9909458, 19818916]

約数ペア:

[(1, 19818916), (2, 9909458), (4, 4954729), (13, 1524532), (23, 861692), (26, 762266), (46, 430846), (52, 381133), (73, 271492), (92, 215423), (146, 135746), (227, 87308), (292, 67873), (299, 66284), (454, 43654), (598, 33142), (908, 21827), (949, 20884), (1196, 16571), (1679, 11804), (1898, 10442), (2951, 6716), (3358, 5902), (3796, 5221)]