21394304

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{463}}^1$

素因数の和:515

約数の個数: 48

約数和(自身を含む): 45079920

約数和(自身を除く): 23685616

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 463, 608, 722, 926, 1216, 1444, 1852, 2432, 2888, 3704, 5776, 7408, 8797, 11552, 14816, 17594, 23104, 29632, 35188, 46208, 59264, 70376, 140752, 167143, 281504, 334286, 563008, 668572, 1126016, 1337144, 2674288, 5348576, 10697152, 21394304]

約数ペア:

[(1, 21394304), (2, 10697152), (4, 5348576), (8, 2674288), (16, 1337144), (19, 1126016), (32, 668572), (38, 563008), (64, 334286), (76, 281504), (128, 167143), (152, 140752), (304, 70376), (361, 59264), (463, 46208), (608, 35188), (722, 29632), (926, 23104), (1216, 17594), (1444, 14816), (1852, 11552), (2432, 8797), (2888, 7408), (3704, 5776)]