21668710

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{139}}^1$

素因数の和:301

約数の個数: 64

約数和(自身を含む): 47900160

約数和(自身を除く): 26231450

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 131, 139, 170, 238, 262, 278, 595, 655, 695, 917, 973, 1190, 1310, 1390, 1834, 1946, 2227, 2363, 4454, 4585, 4726, 4865, 9170, 9730, 11135, 11815, 15589, 16541, 18209, 22270, 23630, 31178, 33082, 36418, 77945, 82705, 91045, 127463, 155890, 165410, 182090, 254926, 309553, 619106, 637315, 1274630, 1547765, 2166871, 3095530, 4333742, 10834355, 21668710]

約数ペア:

[(1, 21668710), (2, 10834355), (5, 4333742), (7, 3095530), (10, 2166871), (14, 1547765), (17, 1274630), (34, 637315), (35, 619106), (70, 309553), (85, 254926), (119, 182090), (131, 165410), (139, 155890), (170, 127463), (238, 91045), (262, 82705), (278, 77945), (595, 36418), (655, 33082), (695, 31178), (917, 23630), (973, 22270), (1190, 18209), (1310, 16541), (1390, 15589), (1834, 11815), (1946, 11135), (2227, 9730), (2363, 9170), (4454, 4865), (4585, 4726)]