821384725

素因数分解:

$5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1$

素因数の和:227

約数の個数: 96

約数和(自身を含む): 1285632000

約数和(自身を除く): 464247275

約数列:

[1, 5, 7, 19, 25, 35, 53, 59, 79, 95, 133, 175, 265, 295, 371, 395, 413, 475, 553, 665, 1007, 1121, 1325, 1475, 1501, 1855, 1975, 2065, 2765, 3127, 3325, 4187, 4661, 5035, 5605, 7049, 7505, 7847, 9275, 10325, 10507, 13825, 15635, 20935, 21889, 23305, 25175, 28025, 29309, 32627, 35245, 37525, 39235, 52535, 59413, 78175, 79553, 88559, 104675, 109445, 116525, 146545, 163135, 176225, 196175, 247033, 262675, 297065, 397765, 415891, 442795, 547225, 556871, 619913, 732725, 815675, 1235165, 1485325, 1729231, 1988825, 2079455, 2213975, 2784355, 3099565, 4693627, 6175825, 8646155, 10397275, 13921775, 15497825, 23468135, 32855389, 43230775, 117340675, 164276945, 821384725]

約数ペア:

[(1, 821384725), (5, 164276945), (7, 117340675), (19, 43230775), (25, 32855389), (35, 23468135), (53, 15497825), (59, 13921775), (79, 10397275), (95, 8646155), (133, 6175825), (175, 4693627), (265, 3099565), (295, 2784355), (371, 2213975), (395, 2079455), (413, 1988825), (475, 1729231), (553, 1485325), (665, 1235165), (1007, 815675), (1121, 732725), (1325, 619913), (1475, 556871), (1501, 547225), (1855, 442795), (1975, 415891), (2065, 397765), (2765, 297065), (3127, 262675), (3325, 247033), (4187, 196175), (4661, 176225), (5035, 163135), (5605, 146545), (7049, 116525), (7505, 109445), (7847, 104675), (9275, 88559), (10325, 79553), (10507, 78175), (13825, 59413), (15635, 52535), (20935, 39235), (21889, 37525), (23305, 35245), (25175, 32627), (28025, 29309)]