18965914

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{157}}^1$

素因数の和:223

約数の個数: 48

約数和(自身を含む): 34924320

約数和(自身を除く): 15958406

約数列:

[1, 2, 11, 17, 19, 22, 34, 38, 157, 187, 209, 289, 314, 323, 374, 418, 578, 646, 1727, 2669, 2983, 3179, 3454, 3553, 5338, 5491, 5966, 6358, 7106, 10982, 29359, 32813, 45373, 50711, 58718, 60401, 65626, 90746, 101422, 120802, 499103, 557821, 862087, 998206, 1115642, 1724174, 9482957, 18965914]

約数ペア:

[(1, 18965914), (2, 9482957), (11, 1724174), (17, 1115642), (19, 998206), (22, 862087), (34, 557821), (38, 499103), (157, 120802), (187, 101422), (209, 90746), (289, 65626), (314, 60401), (323, 58718), (374, 50711), (418, 45373), (578, 32813), (646, 29359), (1727, 10982), (2669, 7106), (2983, 6358), (3179, 5966), (3454, 5491), (3553, 5338)]