20717981570

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{245561}}^1$

素因数の和:245651

約数の個数: 64

約数和(自身を含む): 44554769280

約数和(自身を除く): 23836787710

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 59, 65, 110, 118, 130, 143, 286, 295, 590, 649, 715, 767, 1298, 1430, 1534, 3245, 3835, 6490, 7670, 8437, 16874, 42185, 84370, 245561, 491122, 1227805, 2455610, 2701171, 3192293, 5402342, 6384586, 13505855, 14488099, 15961465, 27011710, 28976198, 31922930, 35115223, 70230446, 72440495, 144880990, 159369089, 175576115, 188345287, 318738178, 351152230, 376690574, 796845445, 941726435, 1593690890, 1883452870, 2071798157, 4143596314, 10358990785, 20717981570]

約数ペア:

[(1, 20717981570), (2, 10358990785), (5, 4143596314), (10, 2071798157), (11, 1883452870), (13, 1593690890), (22, 941726435), (26, 796845445), (55, 376690574), (59, 351152230), (65, 318738178), (110, 188345287), (118, 175576115), (130, 159369089), (143, 144880990), (286, 72440495), (295, 70230446), (590, 35115223), (649, 31922930), (715, 28976198), (767, 27011710), (1298, 15961465), (1430, 14488099), (1534, 13505855), (3245, 6384586), (3835, 5402342), (6490, 3192293), (7670, 2701171), (8437, 2455610), (16874, 1227805), (42185, 491122), (84370, 245561)]