21983836

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{43}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 48935040

約数和(自身を除く): 26951204

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 43, 62, 76, 86, 124, 133, 172, 217, 266, 301, 434, 532, 589, 602, 817, 868, 961, 1178, 1204, 1333, 1634, 1922, 2356, 2666, 3268, 3844, 4123, 5332, 5719, 6727, 8246, 9331, 11438, 13454, 16492, 18259, 18662, 22876, 25327, 26908, 36518, 37324, 41323, 50654, 73036, 82646, 101308, 127813, 165292, 177289, 255626, 289261, 354578, 511252, 578522, 709156, 785137, 1157044, 1570274, 3140548, 5495959, 10991918, 21983836]

約数ペア:

[(1, 21983836), (2, 10991918), (4, 5495959), (7, 3140548), (14, 1570274), (19, 1157044), (28, 785137), (31, 709156), (38, 578522), (43, 511252), (62, 354578), (76, 289261), (86, 255626), (124, 177289), (133, 165292), (172, 127813), (217, 101308), (266, 82646), (301, 73036), (434, 50654), (532, 41323), (589, 37324), (602, 36518), (817, 26908), (868, 25327), (961, 22876), (1178, 18662), (1204, 18259), (1333, 16492), (1634, 13454), (1922, 11438), (2356, 9331), (2666, 8246), (3268, 6727), (3844, 5719), (4123, 5332)]