21703890

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{101}}^1$

素因数の和:172

約数の個数: 128

約数和(自身を含む): 61689600

約数和(自身を除く): 39985710

約数列:

[1, 2, 3, 5, 6, 10, 13, 15, 19, 26, 29, 30, 38, 39, 57, 58, 65, 78, 87, 95, 101, 114, 130, 145, 174, 190, 195, 202, 247, 285, 290, 303, 377, 390, 435, 494, 505, 551, 570, 606, 741, 754, 870, 1010, 1102, 1131, 1235, 1313, 1482, 1515, 1653, 1885, 1919, 2262, 2470, 2626, 2755, 2929, 3030, 3306, 3705, 3770, 3838, 3939, 5510, 5655, 5757, 5858, 6565, 7163, 7410, 7878, 8265, 8787, 9595, 11310, 11514, 13130, 14326, 14645, 16530, 17574, 19190, 19695, 21489, 24947, 28785, 29290, 35815, 38077, 39390, 42978, 43935, 49894, 55651, 57570, 71630, 74841, 76154, 87870, 107445, 111302, 114231, 124735, 149682, 166953, 190385, 214890, 228462, 249470, 278255, 333906, 374205, 380770, 556510, 571155, 723463, 748410, 834765, 1142310, 1446926, 1669530, 2170389, 3617315, 4340778, 7234630, 10851945, 21703890]

約数ペア:

[(1, 21703890), (2, 10851945), (3, 7234630), (5, 4340778), (6, 3617315), (10, 2170389), (13, 1669530), (15, 1446926), (19, 1142310), (26, 834765), (29, 748410), (30, 723463), (38, 571155), (39, 556510), (57, 380770), (58, 374205), (65, 333906), (78, 278255), (87, 249470), (95, 228462), (101, 214890), (114, 190385), (130, 166953), (145, 149682), (174, 124735), (190, 114231), (195, 111302), (202, 107445), (247, 87870), (285, 76154), (290, 74841), (303, 71630), (377, 57570), (390, 55651), (435, 49894), (494, 43935), (505, 42978), (551, 39390), (570, 38077), (606, 35815), (741, 29290), (754, 28785), (870, 24947), (1010, 21489), (1102, 19695), (1131, 19190), (1235, 17574), (1313, 16530), (1482, 14645), (1515, 14326), (1653, 13130), (1885, 11514), (1919, 11310), (2262, 9595), (2470, 8787), (2626, 8265), (2755, 7878), (2929, 7410), (3030, 7163), (3306, 6565), (3705, 5858), (3770, 5757), (3838, 5655), (3939, 5510)]