21399084

素因数分解:

$2^2\times 3^2\times 7^3\times {\mathrm{1733}}^1$

素因数の和:1764

約数の個数: 72

約数和(自身を含む): 63117600

約数和(自身を除く): 41718516

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 84, 98, 126, 147, 196, 252, 294, 343, 441, 588, 686, 882, 1029, 1372, 1733, 1764, 2058, 3087, 3466, 4116, 5199, 6174, 6932, 10398, 12131, 12348, 15597, 20796, 24262, 31194, 36393, 48524, 62388, 72786, 84917, 109179, 145572, 169834, 218358, 254751, 339668, 436716, 509502, 594419, 764253, 1019004, 1188838, 1528506, 1783257, 2377676, 3057012, 3566514, 5349771, 7133028, 10699542, 21399084]

約数ペア:

[(1, 21399084), (2, 10699542), (3, 7133028), (4, 5349771), (6, 3566514), (7, 3057012), (9, 2377676), (12, 1783257), (14, 1528506), (18, 1188838), (21, 1019004), (28, 764253), (36, 594419), (42, 509502), (49, 436716), (63, 339668), (84, 254751), (98, 218358), (126, 169834), (147, 145572), (196, 109179), (252, 84917), (294, 72786), (343, 62388), (441, 48524), (588, 36393), (686, 31194), (882, 24262), (1029, 20796), (1372, 15597), (1733, 12348), (1764, 12131), (2058, 10398), (3087, 6932), (3466, 6174), (4116, 5199)]