21152716

素因数分解:

$2^2\times {\mathrm{13}}^3\times {\mathrm{29}}^1\times {\mathrm{83}}^1$

素因数の和:155

約数の個数: 48

約数和(自身を含む): 41983200

約数和(自身を除く): 20830484

約数列:

[1, 2, 4, 13, 26, 29, 52, 58, 83, 116, 166, 169, 332, 338, 377, 676, 754, 1079, 1508, 2158, 2197, 2407, 4316, 4394, 4814, 4901, 8788, 9628, 9802, 14027, 19604, 28054, 31291, 56108, 62582, 63713, 125164, 127426, 182351, 254852, 364702, 406783, 729404, 813566, 1627132, 5288179, 10576358, 21152716]

約数ペア:

[(1, 21152716), (2, 10576358), (4, 5288179), (13, 1627132), (26, 813566), (29, 729404), (52, 406783), (58, 364702), (83, 254852), (116, 182351), (166, 127426), (169, 125164), (332, 63713), (338, 62582), (377, 56108), (676, 31291), (754, 28054), (1079, 19604), (1508, 14027), (2158, 9802), (2197, 9628), (2407, 8788), (4316, 4901), (4394, 4814)]