19293885

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{59}}^1$

素因数の和:139

約数の個数: 72

約数和(自身を含む): 37683360

約数和(自身を除く): 18389475

約数列:

[1, 3, 5, 9, 13, 15, 39, 43, 45, 59, 65, 117, 129, 169, 177, 195, 215, 295, 387, 507, 531, 559, 585, 645, 767, 845, 885, 1521, 1677, 1935, 2301, 2535, 2537, 2655, 2795, 3835, 5031, 6903, 7267, 7605, 7611, 8385, 9971, 11505, 12685, 21801, 22833, 25155, 29913, 32981, 34515, 36335, 38055, 49855, 65403, 89739, 98943, 109005, 114165, 149565, 164905, 296829, 327015, 428753, 448695, 494715, 1286259, 1484145, 2143765, 3858777, 6431295, 19293885]

約数ペア:

[(1, 19293885), (3, 6431295), (5, 3858777), (9, 2143765), (13, 1484145), (15, 1286259), (39, 494715), (43, 448695), (45, 428753), (59, 327015), (65, 296829), (117, 164905), (129, 149565), (169, 114165), (177, 109005), (195, 98943), (215, 89739), (295, 65403), (387, 49855), (507, 38055), (531, 36335), (559, 34515), (585, 32981), (645, 29913), (767, 25155), (845, 22833), (885, 21801), (1521, 12685), (1677, 11505), (1935, 9971), (2301, 8385), (2535, 7611), (2537, 7605), (2655, 7267), (2795, 6903), (3835, 5031)]