81216310

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{491}}^1$

素因数の和:661

約数の個数: 64

約数和(自身を含む): 178536960

約数和(自身を除く): 97320650

約数列:

[1, 2, 5, 7, 10, 14, 17, 34, 35, 70, 85, 119, 139, 170, 238, 278, 491, 595, 695, 973, 982, 1190, 1390, 1946, 2363, 2455, 3437, 4726, 4865, 4910, 6874, 8347, 9730, 11815, 16541, 16694, 17185, 23630, 33082, 34370, 41735, 58429, 68249, 82705, 83470, 116858, 136498, 165410, 292145, 341245, 477743, 584290, 682490, 955486, 1160233, 2320466, 2388715, 4777430, 5801165, 8121631, 11602330, 16243262, 40608155, 81216310]

約数ペア:

[(1, 81216310), (2, 40608155), (5, 16243262), (7, 11602330), (10, 8121631), (14, 5801165), (17, 4777430), (34, 2388715), (35, 2320466), (70, 1160233), (85, 955486), (119, 682490), (139, 584290), (170, 477743), (238, 341245), (278, 292145), (491, 165410), (595, 136498), (695, 116858), (973, 83470), (982, 82705), (1190, 68249), (1390, 58429), (1946, 41735), (2363, 34370), (2455, 33082), (3437, 23630), (4726, 17185), (4865, 16694), (4910, 16541), (6874, 11815), (8347, 9730)]