20211618

素因数分解:

$2^1\times 3^1\times 7^4\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:117

約数の個数: 80

約数和(自身を含む): 50014656

約数和(自身を除く): 29803038

約数列:

[1, 2, 3, 6, 7, 14, 21, 23, 42, 46, 49, 61, 69, 98, 122, 138, 147, 161, 183, 294, 322, 343, 366, 427, 483, 686, 854, 966, 1029, 1127, 1281, 1403, 2058, 2254, 2401, 2562, 2806, 2989, 3381, 4209, 4802, 5978, 6762, 7203, 7889, 8418, 8967, 9821, 14406, 15778, 17934, 19642, 20923, 23667, 29463, 41846, 47334, 55223, 58926, 62769, 68747, 110446, 125538, 137494, 146461, 165669, 206241, 292922, 331338, 412482, 439383, 481229, 878766, 962458, 1443687, 2887374, 3368603, 6737206, 10105809, 20211618]

約数ペア:

[(1, 20211618), (2, 10105809), (3, 6737206), (6, 3368603), (7, 2887374), (14, 1443687), (21, 962458), (23, 878766), (42, 481229), (46, 439383), (49, 412482), (61, 331338), (69, 292922), (98, 206241), (122, 165669), (138, 146461), (147, 137494), (161, 125538), (183, 110446), (294, 68747), (322, 62769), (343, 58926), (366, 55223), (427, 47334), (483, 41846), (686, 29463), (854, 23667), (966, 20923), (1029, 19642), (1127, 17934), (1281, 15778), (1403, 14406), (2058, 9821), (2254, 8967), (2401, 8418), (2562, 7889), (2806, 7203), (2989, 6762), (3381, 5978), (4209, 4802)]