19500012

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{223}}^1\times {\mathrm{347}}^1$

素因数の和:587

約数の個数: 72

約数和(自身を含む): 56749056

約数和(自身を除く): 37249044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 223, 252, 347, 446, 669, 694, 892, 1041, 1338, 1388, 1561, 2007, 2082, 2429, 2676, 3122, 3123, 4014, 4164, 4683, 4858, 6244, 6246, 7287, 8028, 9366, 9716, 12492, 14049, 14574, 18732, 21861, 28098, 29148, 43722, 56196, 77381, 87444, 154762, 232143, 309524, 464286, 541667, 696429, 928572, 1083334, 1392858, 1625001, 2166668, 2785716, 3250002, 4875003, 6500004, 9750006, 19500012]

約数ペア:

[(1, 19500012), (2, 9750006), (3, 6500004), (4, 4875003), (6, 3250002), (7, 2785716), (9, 2166668), (12, 1625001), (14, 1392858), (18, 1083334), (21, 928572), (28, 696429), (36, 541667), (42, 464286), (63, 309524), (84, 232143), (126, 154762), (223, 87444), (252, 77381), (347, 56196), (446, 43722), (669, 29148), (694, 28098), (892, 21861), (1041, 18732), (1338, 14574), (1388, 14049), (1561, 12492), (2007, 9716), (2082, 9366), (2429, 8028), (2676, 7287), (3122, 6246), (3123, 6244), (4014, 4858), (4164, 4683)]