21500808

素因数分解:

$2^3\times 3^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{389}}^1$

素因数の和:459

約数の個数: 96

約数和(自身を含む): 64022400

約数和(自身を除く): 42521592

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 21, 24, 28, 42, 47, 49, 56, 84, 94, 98, 141, 147, 168, 188, 196, 282, 294, 329, 376, 389, 392, 564, 588, 658, 778, 987, 1128, 1167, 1176, 1316, 1556, 1974, 2303, 2334, 2632, 2723, 3112, 3948, 4606, 4668, 5446, 6909, 7896, 8169, 9212, 9336, 10892, 13818, 16338, 18283, 18424, 19061, 21784, 27636, 32676, 36566, 38122, 54849, 55272, 57183, 65352, 73132, 76244, 109698, 114366, 127981, 146264, 152488, 219396, 228732, 255962, 383943, 438792, 457464, 511924, 767886, 895867, 1023848, 1535772, 1791734, 2687601, 3071544, 3583468, 5375202, 7166936, 10750404, 21500808]

約数ペア:

[(1, 21500808), (2, 10750404), (3, 7166936), (4, 5375202), (6, 3583468), (7, 3071544), (8, 2687601), (12, 1791734), (14, 1535772), (21, 1023848), (24, 895867), (28, 767886), (42, 511924), (47, 457464), (49, 438792), (56, 383943), (84, 255962), (94, 228732), (98, 219396), (141, 152488), (147, 146264), (168, 127981), (188, 114366), (196, 109698), (282, 76244), (294, 73132), (329, 65352), (376, 57183), (389, 55272), (392, 54849), (564, 38122), (588, 36566), (658, 32676), (778, 27636), (987, 21784), (1128, 19061), (1167, 18424), (1176, 18283), (1316, 16338), (1556, 13818), (1974, 10892), (2303, 9336), (2334, 9212), (2632, 8169), (2723, 7896), (3112, 6909), (3948, 5446), (4606, 4668)]