21126924

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6449}}^1$

素因数の和:6479

約数の個数: 72

約数和(自身を含む): 65738400

約数和(自身を除く): 44611476

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 28, 36, 39, 42, 52, 63, 78, 84, 91, 117, 126, 156, 182, 234, 252, 273, 364, 468, 546, 819, 1092, 1638, 3276, 6449, 12898, 19347, 25796, 38694, 45143, 58041, 77388, 83837, 90286, 116082, 135429, 167674, 180572, 232164, 251511, 270858, 335348, 406287, 503022, 541716, 586859, 754533, 812574, 1006044, 1173718, 1509066, 1625148, 1760577, 2347436, 3018132, 3521154, 5281731, 7042308, 10563462, 21126924]

約数ペア:

[(1, 21126924), (2, 10563462), (3, 7042308), (4, 5281731), (6, 3521154), (7, 3018132), (9, 2347436), (12, 1760577), (13, 1625148), (14, 1509066), (18, 1173718), (21, 1006044), (26, 812574), (28, 754533), (36, 586859), (39, 541716), (42, 503022), (52, 406287), (63, 335348), (78, 270858), (84, 251511), (91, 232164), (117, 180572), (126, 167674), (156, 135429), (182, 116082), (234, 90286), (252, 83837), (273, 77388), (364, 58041), (468, 45143), (546, 38694), (819, 25796), (1092, 19347), (1638, 12898), (3276, 6449)]