19977018

素因数分解:

$2^1\times 3^1\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{401}}^1$

素因数の和:467

約数の個数: 48

約数和(自身を含む): 44110656

約数和(自身を除く): 24133638

約数列:

[1, 2, 3, 6, 19, 23, 38, 46, 57, 69, 114, 138, 361, 401, 437, 722, 802, 874, 1083, 1203, 1311, 2166, 2406, 2622, 7619, 8303, 9223, 15238, 16606, 18446, 22857, 24909, 27669, 45714, 49818, 55338, 144761, 175237, 289522, 350474, 434283, 525711, 868566, 1051422, 3329503, 6659006, 9988509, 19977018]

約数ペア:

[(1, 19977018), (2, 9988509), (3, 6659006), (6, 3329503), (19, 1051422), (23, 868566), (38, 525711), (46, 434283), (57, 350474), (69, 289522), (114, 175237), (138, 144761), (361, 55338), (401, 49818), (437, 45714), (722, 27669), (802, 24909), (874, 22857), (1083, 18446), (1203, 16606), (1311, 15238), (2166, 9223), (2406, 8303), (2622, 7619)]