21019432

素因数分解:

$2^3\times 7^2\times {\mathrm{29}}^1\times {\mathrm{43}}^2$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 48555450

約数和(自身を除く): 27536018

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 43, 49, 56, 58, 86, 98, 116, 172, 196, 203, 232, 301, 344, 392, 406, 602, 812, 1204, 1247, 1421, 1624, 1849, 2107, 2408, 2494, 2842, 3698, 4214, 4988, 5684, 7396, 8428, 8729, 9976, 11368, 12943, 14792, 16856, 17458, 25886, 34916, 51772, 53621, 61103, 69832, 90601, 103544, 107242, 122206, 181202, 214484, 244412, 362404, 375347, 428968, 488824, 724808, 750694, 1501388, 2627429, 3002776, 5254858, 10509716, 21019432]

約数ペア:

[(1, 21019432), (2, 10509716), (4, 5254858), (7, 3002776), (8, 2627429), (14, 1501388), (28, 750694), (29, 724808), (43, 488824), (49, 428968), (56, 375347), (58, 362404), (86, 244412), (98, 214484), (116, 181202), (172, 122206), (196, 107242), (203, 103544), (232, 90601), (301, 69832), (344, 61103), (392, 53621), (406, 51772), (602, 34916), (812, 25886), (1204, 17458), (1247, 16856), (1421, 14792), (1624, 12943), (1849, 11368), (2107, 9976), (2408, 8729), (2494, 8428), (2842, 7396), (3698, 5684), (4214, 4988)]