20100710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{157}}^1$

素因数の和:261

約数の個数: 64

約数和(自身を含む): 43683840

約数和(自身を除く): 23583130

約数列:

[1, 2, 5, 7, 10, 14, 31, 35, 59, 62, 70, 118, 155, 157, 217, 295, 310, 314, 413, 434, 590, 785, 826, 1085, 1099, 1570, 1829, 2065, 2170, 2198, 3658, 4130, 4867, 5495, 9145, 9263, 9734, 10990, 12803, 18290, 18526, 24335, 25606, 34069, 46315, 48670, 64015, 64841, 68138, 92630, 128030, 129682, 170345, 287153, 324205, 340690, 574306, 648410, 1435765, 2010071, 2871530, 4020142, 10050355, 20100710]

約数ペア:

[(1, 20100710), (2, 10050355), (5, 4020142), (7, 2871530), (10, 2010071), (14, 1435765), (31, 648410), (35, 574306), (59, 340690), (62, 324205), (70, 287153), (118, 170345), (155, 129682), (157, 128030), (217, 92630), (295, 68138), (310, 64841), (314, 64015), (413, 48670), (434, 46315), (590, 34069), (785, 25606), (826, 24335), (1085, 18526), (1099, 18290), (1570, 12803), (1829, 10990), (2065, 9734), (2170, 9263), (2198, 9145), (3658, 5495), (4130, 4867)]