639755390

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{263}}^1\times {\mathrm{349}}^1$

素因数の和:677

約数の個数: 64

約数和(自身を含む): 1257379200

約数和(自身を除く): 617623810

約数列:

[1, 2, 5, 10, 17, 34, 41, 82, 85, 170, 205, 263, 349, 410, 526, 697, 698, 1315, 1394, 1745, 2630, 3485, 3490, 4471, 5933, 6970, 8942, 10783, 11866, 14309, 21566, 22355, 28618, 29665, 44710, 53915, 59330, 71545, 91787, 107830, 143090, 183311, 183574, 243253, 366622, 458935, 486506, 916555, 917870, 1216265, 1560379, 1833110, 2432530, 3120758, 3763267, 7526534, 7801895, 15603790, 18816335, 37632670, 63975539, 127951078, 319877695, 639755390]

約数ペア:

[(1, 639755390), (2, 319877695), (5, 127951078), (10, 63975539), (17, 37632670), (34, 18816335), (41, 15603790), (82, 7801895), (85, 7526534), (170, 3763267), (205, 3120758), (263, 2432530), (349, 1833110), (410, 1560379), (526, 1216265), (697, 917870), (698, 916555), (1315, 486506), (1394, 458935), (1745, 366622), (2630, 243253), (3485, 183574), (3490, 183311), (4471, 143090), (5933, 107830), (6970, 91787), (8942, 71545), (10783, 59330), (11866, 53915), (14309, 44710), (21566, 29665), (22355, 28618)]