21408156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{7723}}^1$

素因数の和:7751

約数の個数: 72

約数和(自身を含む): 67476864

約数和(自身を除く): 46068708

約数列:

[1, 2, 3, 4, 6, 7, 9, 11, 12, 14, 18, 21, 22, 28, 33, 36, 42, 44, 63, 66, 77, 84, 99, 126, 132, 154, 198, 231, 252, 308, 396, 462, 693, 924, 1386, 2772, 7723, 15446, 23169, 30892, 46338, 54061, 69507, 84953, 92676, 108122, 139014, 162183, 169906, 216244, 254859, 278028, 324366, 339812, 486549, 509718, 594671, 648732, 764577, 973098, 1019436, 1189342, 1529154, 1784013, 1946196, 2378684, 3058308, 3568026, 5352039, 7136052, 10704078, 21408156]

約数ペア:

[(1, 21408156), (2, 10704078), (3, 7136052), (4, 5352039), (6, 3568026), (7, 3058308), (9, 2378684), (11, 1946196), (12, 1784013), (14, 1529154), (18, 1189342), (21, 1019436), (22, 973098), (28, 764577), (33, 648732), (36, 594671), (42, 509718), (44, 486549), (63, 339812), (66, 324366), (77, 278028), (84, 254859), (99, 216244), (126, 169906), (132, 162183), (154, 139014), (198, 108122), (231, 92676), (252, 84953), (308, 69507), (396, 54061), (462, 46338), (693, 30892), (924, 23169), (1386, 15446), (2772, 7723)]