21928060

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{491}}^1$

素因数の和:547

約数の個数: 96

約数和(自身を含む): 59512320

約数和(自身を除く): 37584260

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 29, 35, 44, 55, 58, 70, 77, 110, 116, 140, 145, 154, 203, 220, 290, 308, 319, 385, 406, 491, 580, 638, 770, 812, 982, 1015, 1276, 1540, 1595, 1964, 2030, 2233, 2455, 3190, 3437, 4060, 4466, 4910, 5401, 6380, 6874, 8932, 9820, 10802, 11165, 13748, 14239, 17185, 21604, 22330, 27005, 28478, 34370, 37807, 44660, 54010, 56956, 68740, 71195, 75614, 99673, 108020, 142390, 151228, 156629, 189035, 199346, 284780, 313258, 378070, 398692, 498365, 626516, 756140, 783145, 996730, 1096403, 1566290, 1993460, 2192806, 3132580, 4385612, 5482015, 10964030, 21928060]

約数ペア:

[(1, 21928060), (2, 10964030), (4, 5482015), (5, 4385612), (7, 3132580), (10, 2192806), (11, 1993460), (14, 1566290), (20, 1096403), (22, 996730), (28, 783145), (29, 756140), (35, 626516), (44, 498365), (55, 398692), (58, 378070), (70, 313258), (77, 284780), (110, 199346), (116, 189035), (140, 156629), (145, 151228), (154, 142390), (203, 108020), (220, 99673), (290, 75614), (308, 71195), (319, 68740), (385, 56956), (406, 54010), (491, 44660), (580, 37807), (638, 34370), (770, 28478), (812, 27005), (982, 22330), (1015, 21604), (1276, 17185), (1540, 14239), (1595, 13748), (1964, 11165), (2030, 10802), (2233, 9820), (2455, 8932), (3190, 6874), (3437, 6380), (4060, 5401), (4466, 4910)]