21152726

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:165

約数の個数: 64

約数和(自身を含む): 41140224

約数和(自身を除く): 19987498

約数列:

[1, 2, 7, 14, 17, 31, 34, 47, 61, 62, 94, 119, 122, 217, 238, 329, 427, 434, 527, 658, 799, 854, 1037, 1054, 1457, 1598, 1891, 2074, 2867, 2914, 3689, 3782, 5593, 5734, 7259, 7378, 10199, 11186, 13237, 14518, 20069, 20398, 24769, 26474, 32147, 40138, 48739, 49538, 64294, 88877, 97478, 173383, 177754, 225029, 341173, 346766, 450058, 622139, 682346, 1244278, 1510909, 3021818, 10576363, 21152726]

約数ペア:

[(1, 21152726), (2, 10576363), (7, 3021818), (14, 1510909), (17, 1244278), (31, 682346), (34, 622139), (47, 450058), (61, 346766), (62, 341173), (94, 225029), (119, 177754), (122, 173383), (217, 97478), (238, 88877), (329, 64294), (427, 49538), (434, 48739), (527, 40138), (658, 32147), (799, 26474), (854, 24769), (1037, 20398), (1054, 20069), (1457, 14518), (1598, 13237), (1891, 11186), (2074, 10199), (2867, 7378), (2914, 7259), (3689, 5734), (3782, 5593)]