819193025

素因数分解:

$5^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{139}}^1\times {\mathrm{283}}^1$

素因数の和:463

約数の個数: 72

約数和(自身を含む): 1264606560

約数和(自身を除く): 445413535

約数列:

[1, 5, 7, 17, 25, 35, 49, 85, 119, 139, 175, 245, 283, 425, 595, 695, 833, 973, 1225, 1415, 1981, 2363, 2975, 3475, 4165, 4811, 4865, 6811, 7075, 9905, 11815, 13867, 16541, 20825, 24055, 24325, 33677, 34055, 39337, 49525, 59075, 69335, 82705, 115787, 120275, 168385, 170275, 196685, 235739, 275359, 346675, 413525, 578935, 668729, 841925, 983425, 1178695, 1376795, 1927513, 2894675, 3343645, 4681103, 5893475, 6883975, 9637565, 16718225, 23405515, 32767721, 48187825, 117027575, 163838605, 819193025]

約数ペア:

[(1, 819193025), (5, 163838605), (7, 117027575), (17, 48187825), (25, 32767721), (35, 23405515), (49, 16718225), (85, 9637565), (119, 6883975), (139, 5893475), (175, 4681103), (245, 3343645), (283, 2894675), (425, 1927513), (595, 1376795), (695, 1178695), (833, 983425), (973, 841925), (1225, 668729), (1415, 578935), (1981, 413525), (2363, 346675), (2975, 275359), (3475, 235739), (4165, 196685), (4811, 170275), (4865, 168385), (6811, 120275), (7075, 115787), (9905, 82705), (11815, 69335), (13867, 59075), (16541, 49525), (20825, 39337), (24055, 34055), (24325, 33677)]