21112308

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{421}}^1$

素因数の和:637

約数の個数: 72

約数和(自身を含む): 61443200

約数和(自身を除く): 40330892

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 199, 252, 398, 421, 597, 796, 842, 1194, 1263, 1393, 1684, 1791, 2388, 2526, 2786, 2947, 3582, 3789, 4179, 5052, 5572, 5894, 7164, 7578, 8358, 8841, 11788, 12537, 15156, 16716, 17682, 25074, 26523, 35364, 50148, 53046, 83779, 106092, 167558, 251337, 335116, 502674, 586453, 754011, 1005348, 1172906, 1508022, 1759359, 2345812, 3016044, 3518718, 5278077, 7037436, 10556154, 21112308]

約数ペア:

[(1, 21112308), (2, 10556154), (3, 7037436), (4, 5278077), (6, 3518718), (7, 3016044), (9, 2345812), (12, 1759359), (14, 1508022), (18, 1172906), (21, 1005348), (28, 754011), (36, 586453), (42, 502674), (63, 335116), (84, 251337), (126, 167558), (199, 106092), (252, 83779), (398, 53046), (421, 50148), (597, 35364), (796, 26523), (842, 25074), (1194, 17682), (1263, 16716), (1393, 15156), (1684, 12537), (1791, 11788), (2388, 8841), (2526, 8358), (2786, 7578), (2947, 7164), (3582, 5894), (3789, 5572), (4179, 5052)]