21286580

素因数分解:

$2^2\times 5^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{107}}^1$

素因数の和:166

約数の個数: 96

約数和(自身を含む): 54432000

約数和(自身を除く): 33145420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 49, 58, 70, 98, 107, 116, 140, 145, 196, 203, 214, 245, 290, 343, 406, 428, 490, 535, 580, 686, 749, 812, 980, 1015, 1070, 1372, 1421, 1498, 1715, 2030, 2140, 2842, 2996, 3103, 3430, 3745, 4060, 5243, 5684, 6206, 6860, 7105, 7490, 9947, 10486, 12412, 14210, 14980, 15515, 19894, 20972, 21721, 26215, 28420, 31030, 36701, 39788, 43442, 49735, 52430, 62060, 73402, 86884, 99470, 104860, 108605, 146804, 152047, 183505, 198940, 217210, 304094, 367010, 434420, 608188, 734020, 760235, 1064329, 1520470, 2128658, 3040940, 4257316, 5321645, 10643290, 21286580]

約数ペア:

[(1, 21286580), (2, 10643290), (4, 5321645), (5, 4257316), (7, 3040940), (10, 2128658), (14, 1520470), (20, 1064329), (28, 760235), (29, 734020), (35, 608188), (49, 434420), (58, 367010), (70, 304094), (98, 217210), (107, 198940), (116, 183505), (140, 152047), (145, 146804), (196, 108605), (203, 104860), (214, 99470), (245, 86884), (290, 73402), (343, 62060), (406, 52430), (428, 49735), (490, 43442), (535, 39788), (580, 36701), (686, 31030), (749, 28420), (812, 26215), (980, 21721), (1015, 20972), (1070, 19894), (1372, 15515), (1421, 14980), (1498, 14210), (1715, 12412), (2030, 10486), (2140, 9947), (2842, 7490), (2996, 7105), (3103, 6860), (3430, 6206), (3745, 5684), (4060, 5243)]