21390264

素因数分解:

$2^3\times 3^3\times 7^2\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:119

約数の個数: 192

約数和(自身を含む): 72230400

約数和(自身を除く): 50840136

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 43, 47, 49, 54, 56, 63, 72, 84, 86, 94, 98, 108, 126, 129, 141, 147, 168, 172, 188, 189, 196, 216, 252, 258, 282, 294, 301, 329, 344, 376, 378, 387, 392, 423, 441, 504, 516, 564, 588, 602, 658, 756, 774, 846, 882, 903, 987, 1032, 1128, 1161, 1176, 1204, 1269, 1316, 1323, 1512, 1548, 1692, 1764, 1806, 1974, 2021, 2107, 2303, 2322, 2408, 2538, 2632, 2646, 2709, 2961, 3096, 3384, 3528, 3612, 3948, 4042, 4214, 4606, 4644, 5076, 5292, 5418, 5922, 6063, 6321, 6909, 7224, 7896, 8084, 8127, 8428, 8883, 9212, 9288, 10152, 10584, 10836, 11844, 12126, 12642, 13818, 14147, 16168, 16254, 16856, 17766, 18189, 18424, 18963, 20727, 21672, 23688, 24252, 25284, 27636, 28294, 32508, 35532, 36378, 37926, 41454, 42441, 48504, 50568, 54567, 55272, 56588, 56889, 62181, 65016, 71064, 72756, 75852, 82908, 84882, 99029, 109134, 113176, 113778, 124362, 127323, 145512, 151704, 165816, 169764, 198058, 218268, 227556, 248724, 254646, 297087, 339528, 381969, 396116, 436536, 455112, 497448, 509292, 594174, 763938, 792232, 891261, 1018584, 1188348, 1527876, 1782522, 2376696, 2673783, 3055752, 3565044, 5347566, 7130088, 10695132, 21390264]

約数ペア:

[(1, 21390264), (2, 10695132), (3, 7130088), (4, 5347566), (6, 3565044), (7, 3055752), (8, 2673783), (9, 2376696), (12, 1782522), (14, 1527876), (18, 1188348), (21, 1018584), (24, 891261), (27, 792232), (28, 763938), (36, 594174), (42, 509292), (43, 497448), (47, 455112), (49, 436536), (54, 396116), (56, 381969), (63, 339528), (72, 297087), (84, 254646), (86, 248724), (94, 227556), (98, 218268), (108, 198058), (126, 169764), (129, 165816), (141, 151704), (147, 145512), (168, 127323), (172, 124362), (188, 113778), (189, 113176), (196, 109134), (216, 99029), (252, 84882), (258, 82908), (282, 75852), (294, 72756), (301, 71064), (329, 65016), (344, 62181), (376, 56889), (378, 56588), (387, 55272), (392, 54567), (423, 50568), (441, 48504), (504, 42441), (516, 41454), (564, 37926), (588, 36378), (602, 35532), (658, 32508), (756, 28294), (774, 27636), (846, 25284), (882, 24252), (903, 23688), (987, 21672), (1032, 20727), (1128, 18963), (1161, 18424), (1176, 18189), (1204, 17766), (1269, 16856), (1316, 16254), (1323, 16168), (1512, 14147), (1548, 13818), (1692, 12642), (1764, 12126), (1806, 11844), (1974, 10836), (2021, 10584), (2107, 10152), (2303, 9288), (2322, 9212), (2408, 8883), (2538, 8428), (2632, 8127), (2646, 8084), (2709, 7896), (2961, 7224), (3096, 6909), (3384, 6321), (3528, 6063), (3612, 5922), (3948, 5418), (4042, 5292), (4214, 5076), (4606, 4644)]