21156156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{2269}}^1$

素因数の和:2323

約数の個数: 72

約数和(自身を含む): 62797280

約数和(自身を除く): 41641124

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 37, 42, 63, 74, 84, 111, 126, 148, 222, 252, 259, 333, 444, 518, 666, 777, 1036, 1332, 1554, 2269, 2331, 3108, 4538, 4662, 6807, 9076, 9324, 13614, 15883, 20421, 27228, 31766, 40842, 47649, 63532, 81684, 83953, 95298, 142947, 167906, 190596, 251859, 285894, 335812, 503718, 571788, 587671, 755577, 1007436, 1175342, 1511154, 1763013, 2350684, 3022308, 3526026, 5289039, 7052052, 10578078, 21156156]

約数ペア:

[(1, 21156156), (2, 10578078), (3, 7052052), (4, 5289039), (6, 3526026), (7, 3022308), (9, 2350684), (12, 1763013), (14, 1511154), (18, 1175342), (21, 1007436), (28, 755577), (36, 587671), (37, 571788), (42, 503718), (63, 335812), (74, 285894), (84, 251859), (111, 190596), (126, 167906), (148, 142947), (222, 95298), (252, 83953), (259, 81684), (333, 63532), (444, 47649), (518, 40842), (666, 31766), (777, 27228), (1036, 20421), (1332, 15883), (1554, 13614), (2269, 9324), (2331, 9076), (3108, 6807), (4538, 4662)]