638931454

素因数分解:

$2^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{103}}^1\times {\mathrm{107}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 1154829312

約数和(自身を除く): 515897858

約数列:

[1, 2, 7, 14, 41, 82, 101, 103, 107, 202, 206, 214, 287, 574, 707, 721, 749, 1414, 1442, 1498, 4141, 4223, 4387, 8282, 8446, 8774, 10403, 10807, 11021, 20806, 21614, 22042, 28987, 29561, 30709, 57974, 59122, 61418, 72821, 75649, 77147, 145642, 151298, 154294, 426523, 443087, 451861, 853046, 886174, 903722, 1113121, 2226242, 2985661, 3101609, 3163027, 5971322, 6203218, 6326054, 7791847, 15583694, 45637961, 91275922, 319465727, 638931454]

約数ペア:

[(1, 638931454), (2, 319465727), (7, 91275922), (14, 45637961), (41, 15583694), (82, 7791847), (101, 6326054), (103, 6203218), (107, 5971322), (202, 3163027), (206, 3101609), (214, 2985661), (287, 2226242), (574, 1113121), (707, 903722), (721, 886174), (749, 853046), (1414, 451861), (1442, 443087), (1498, 426523), (4141, 154294), (4223, 151298), (4387, 145642), (8282, 77147), (8446, 75649), (8774, 72821), (10403, 61418), (10807, 59122), (11021, 57974), (20806, 30709), (21614, 29561), (22042, 28987)]