21971796

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:154

約数の個数: 144

約数和(自身を含む): 67415040

約数和(自身を除く): 45443244

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 14, 21, 22, 28, 33, 42, 43, 44, 49, 66, 77, 79, 84, 86, 98, 129, 132, 147, 154, 158, 172, 196, 231, 237, 258, 294, 301, 308, 316, 462, 473, 474, 516, 539, 553, 588, 602, 869, 903, 924, 946, 948, 1078, 1106, 1204, 1419, 1617, 1659, 1738, 1806, 1892, 2107, 2156, 2212, 2607, 2838, 3234, 3311, 3318, 3397, 3476, 3612, 3871, 4214, 5214, 5676, 6083, 6321, 6468, 6622, 6636, 6794, 7742, 8428, 9933, 10191, 10428, 11613, 12166, 12642, 13244, 13588, 15484, 18249, 19866, 20382, 23177, 23226, 23779, 24332, 25284, 36498, 37367, 39732, 40764, 42581, 46354, 46452, 47558, 69531, 71337, 72996, 74734, 85162, 92708, 95116, 112101, 127743, 139062, 142674, 149468, 166453, 170324, 224202, 255486, 261569, 278124, 285348, 332906, 448404, 499359, 510972, 523138, 665812, 784707, 998718, 1046276, 1569414, 1830983, 1997436, 3138828, 3661966, 5492949, 7323932, 10985898, 21971796]

約数ペア:

[(1, 21971796), (2, 10985898), (3, 7323932), (4, 5492949), (6, 3661966), (7, 3138828), (11, 1997436), (12, 1830983), (14, 1569414), (21, 1046276), (22, 998718), (28, 784707), (33, 665812), (42, 523138), (43, 510972), (44, 499359), (49, 448404), (66, 332906), (77, 285348), (79, 278124), (84, 261569), (86, 255486), (98, 224202), (129, 170324), (132, 166453), (147, 149468), (154, 142674), (158, 139062), (172, 127743), (196, 112101), (231, 95116), (237, 92708), (258, 85162), (294, 74734), (301, 72996), (308, 71337), (316, 69531), (462, 47558), (473, 46452), (474, 46354), (516, 42581), (539, 40764), (553, 39732), (588, 37367), (602, 36498), (869, 25284), (903, 24332), (924, 23779), (946, 23226), (948, 23177), (1078, 20382), (1106, 19866), (1204, 18249), (1419, 15484), (1617, 13588), (1659, 13244), (1738, 12642), (1806, 12166), (1892, 11613), (2107, 10428), (2156, 10191), (2212, 9933), (2607, 8428), (2838, 7742), (3234, 6794), (3311, 6636), (3318, 6622), (3397, 6468), (3476, 6321), (3612, 6083), (3871, 5676), (4214, 5214)]