668839340

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{59}}^2\times {\mathrm{739}}^1$

素因数の和:879

約数の個数: 72

約数和(自身を含む): 1540759920

約数和(自身を除く): 871920580

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 59, 65, 118, 130, 236, 260, 295, 590, 739, 767, 1180, 1478, 1534, 2956, 3068, 3481, 3695, 3835, 6962, 7390, 7670, 9607, 13924, 14780, 15340, 17405, 19214, 34810, 38428, 43601, 45253, 48035, 69620, 87202, 90506, 96070, 174404, 181012, 192140, 218005, 226265, 436010, 452530, 566813, 872020, 905060, 1133626, 2267252, 2572459, 2834065, 5144918, 5668130, 10289836, 11336260, 12862295, 25724590, 33441967, 51449180, 66883934, 133767868, 167209835, 334419670, 668839340]

約数ペア:

[(1, 668839340), (2, 334419670), (4, 167209835), (5, 133767868), (10, 66883934), (13, 51449180), (20, 33441967), (26, 25724590), (52, 12862295), (59, 11336260), (65, 10289836), (118, 5668130), (130, 5144918), (236, 2834065), (260, 2572459), (295, 2267252), (590, 1133626), (739, 905060), (767, 872020), (1180, 566813), (1478, 452530), (1534, 436010), (2956, 226265), (3068, 218005), (3481, 192140), (3695, 181012), (3835, 174404), (6962, 96070), (7390, 90506), (7670, 87202), (9607, 69620), (13924, 48035), (14780, 45253), (15340, 43601), (17405, 38428), (19214, 34810)]