1286740

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{101}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 3418632

約数和(自身を除く): 2131892

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 101, 130, 140, 182, 196, 202, 245, 260, 364, 404, 455, 490, 505, 637, 707, 910, 980, 1010, 1274, 1313, 1414, 1820, 2020, 2548, 2626, 2828, 3185, 3535, 4949, 5252, 6370, 6565, 7070, 9191, 9898, 12740, 13130, 14140, 18382, 19796, 24745, 26260, 36764, 45955, 49490, 64337, 91910, 98980, 128674, 183820, 257348, 321685, 643370, 1286740]

約数ペア:

[(1, 1286740), (2, 643370), (4, 321685), (5, 257348), (7, 183820), (10, 128674), (13, 98980), (14, 91910), (20, 64337), (26, 49490), (28, 45955), (35, 36764), (49, 26260), (52, 24745), (65, 19796), (70, 18382), (91, 14140), (98, 13130), (101, 12740), (130, 9898), (140, 9191), (182, 7070), (196, 6565), (202, 6370), (245, 5252), (260, 4949), (364, 3535), (404, 3185), (455, 2828), (490, 2626), (505, 2548), (637, 2020), (707, 1820), (910, 1414), (980, 1313), (1010, 1274)]