21007070

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{127}}^1\times {\mathrm{139}}^1$

素因数の和:297

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25441570

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 127, 139, 170, 238, 254, 278, 595, 635, 695, 889, 973, 1190, 1270, 1390, 1778, 1946, 2159, 2363, 4318, 4445, 4726, 4865, 8890, 9730, 10795, 11815, 15113, 16541, 17653, 21590, 23630, 30226, 33082, 35306, 75565, 82705, 88265, 123571, 151130, 165410, 176530, 247142, 300101, 600202, 617855, 1235710, 1500505, 2100707, 3001010, 4201414, 10503535, 21007070]

約数ペア:

[(1, 21007070), (2, 10503535), (5, 4201414), (7, 3001010), (10, 2100707), (14, 1500505), (17, 1235710), (34, 617855), (35, 600202), (70, 300101), (85, 247142), (119, 176530), (127, 165410), (139, 151130), (170, 123571), (238, 88265), (254, 82705), (278, 75565), (595, 35306), (635, 33082), (695, 30226), (889, 23630), (973, 21590), (1190, 17653), (1270, 16541), (1390, 15113), (1778, 11815), (1946, 10795), (2159, 9730), (2363, 8890), (4318, 4865), (4445, 4726)]