21499492

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{47}}^1$

素因数の和:137

約数の個数: 72

約数和(自身を含む): 48045312

約数和(自身を除く): 26545820

約数列:

[1, 2, 4, 7, 14, 17, 28, 31, 34, 47, 62, 68, 94, 119, 124, 188, 217, 238, 329, 434, 476, 527, 658, 799, 868, 961, 1054, 1316, 1457, 1598, 1922, 2108, 2914, 3196, 3689, 3844, 5593, 5828, 6727, 7378, 10199, 11186, 13454, 14756, 16337, 20398, 22372, 24769, 26908, 32674, 40796, 45167, 49538, 65348, 90334, 99076, 114359, 173383, 180668, 228718, 316169, 346766, 457436, 632338, 693532, 767839, 1264676, 1535678, 3071356, 5374873, 10749746, 21499492]

約数ペア:

[(1, 21499492), (2, 10749746), (4, 5374873), (7, 3071356), (14, 1535678), (17, 1264676), (28, 767839), (31, 693532), (34, 632338), (47, 457436), (62, 346766), (68, 316169), (94, 228718), (119, 180668), (124, 173383), (188, 114359), (217, 99076), (238, 90334), (329, 65348), (434, 49538), (476, 45167), (527, 40796), (658, 32674), (799, 26908), (868, 24769), (961, 22372), (1054, 20398), (1316, 16337), (1457, 14756), (1598, 13454), (1922, 11186), (2108, 10199), (2914, 7378), (3196, 6727), (3689, 5828), (3844, 5593)]