21672860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 53222400

約数和(自身を除く): 31549540

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 29, 43, 44, 55, 58, 79, 86, 110, 116, 145, 158, 172, 215, 220, 290, 316, 319, 395, 430, 473, 580, 638, 790, 860, 869, 946, 1247, 1276, 1580, 1595, 1738, 1892, 2291, 2365, 2494, 3190, 3397, 3476, 4345, 4582, 4730, 4988, 6235, 6380, 6794, 8690, 9164, 9460, 11455, 12470, 13588, 13717, 16985, 17380, 22910, 24940, 25201, 27434, 33970, 37367, 45820, 50402, 54868, 67940, 68585, 74734, 98513, 100804, 126005, 137170, 149468, 186835, 197026, 252010, 274340, 373670, 394052, 492565, 504020, 747340, 985130, 1083643, 1970260, 2167286, 4334572, 5418215, 10836430, 21672860]

約数ペア:

[(1, 21672860), (2, 10836430), (4, 5418215), (5, 4334572), (10, 2167286), (11, 1970260), (20, 1083643), (22, 985130), (29, 747340), (43, 504020), (44, 492565), (55, 394052), (58, 373670), (79, 274340), (86, 252010), (110, 197026), (116, 186835), (145, 149468), (158, 137170), (172, 126005), (215, 100804), (220, 98513), (290, 74734), (316, 68585), (319, 67940), (395, 54868), (430, 50402), (473, 45820), (580, 37367), (638, 33970), (790, 27434), (860, 25201), (869, 24940), (946, 22910), (1247, 17380), (1276, 16985), (1580, 13717), (1595, 13588), (1738, 12470), (1892, 11455), (2291, 9460), (2365, 9164), (2494, 8690), (3190, 6794), (3397, 6380), (3476, 6235), (4345, 4988), (4582, 4730)]