18972786

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:499

約数の個数: 64

約数和(自身を含む): 46183680

約数和(自身を除く): 27210894

約数列:

[1, 2, 3, 6, 7, 14, 21, 29, 37, 42, 58, 74, 87, 111, 174, 203, 222, 259, 406, 421, 518, 609, 777, 842, 1073, 1218, 1263, 1554, 2146, 2526, 2947, 3219, 5894, 6438, 7511, 8841, 12209, 15022, 15577, 17682, 22533, 24418, 31154, 36627, 45066, 46731, 73254, 85463, 93462, 109039, 170926, 218078, 256389, 327117, 451733, 512778, 654234, 903466, 1355199, 2710398, 3162131, 6324262, 9486393, 18972786]

約数ペア:

[(1, 18972786), (2, 9486393), (3, 6324262), (6, 3162131), (7, 2710398), (14, 1355199), (21, 903466), (29, 654234), (37, 512778), (42, 451733), (58, 327117), (74, 256389), (87, 218078), (111, 170926), (174, 109039), (203, 93462), (222, 85463), (259, 73254), (406, 46731), (421, 45066), (518, 36627), (609, 31154), (777, 24418), (842, 22533), (1073, 17682), (1218, 15577), (1263, 15022), (1554, 12209), (2146, 8841), (2526, 7511), (2947, 6438), (3219, 5894)]