210917861

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{2731}}^1$

素因数の和:2825

約数の個数: 32

約数和(自身を含む): 283253760

約数和(自身を除く): 72335899

約数列:

[1, 7, 11, 17, 59, 77, 119, 187, 413, 649, 1003, 1309, 2731, 4543, 7021, 11033, 19117, 30041, 46427, 77231, 161129, 210287, 324989, 510697, 1127903, 1772419, 2739193, 3574879, 12406933, 19174351, 30131123, 210917861]

約数ペア:

[(1, 210917861), (7, 30131123), (11, 19174351), (17, 12406933), (59, 3574879), (77, 2739193), (119, 1772419), (187, 1127903), (413, 510697), (649, 324989), (1003, 210287), (1309, 161129), (2731, 77231), (4543, 46427), (7021, 30041), (11033, 19117)]