21301888

素因数分解:

$2^7\times {\mathrm{19}}^2\times {\mathrm{461}}^1$

素因数の和:513

約数の個数: 48

約数和(自身を含む): 44885610

約数和(自身を除く): 23583722

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 304, 361, 461, 608, 722, 922, 1216, 1444, 1844, 2432, 2888, 3688, 5776, 7376, 8759, 11552, 14752, 17518, 23104, 29504, 35036, 46208, 59008, 70072, 140144, 166421, 280288, 332842, 560576, 665684, 1121152, 1331368, 2662736, 5325472, 10650944, 21301888]

約数ペア:

[(1, 21301888), (2, 10650944), (4, 5325472), (8, 2662736), (16, 1331368), (19, 1121152), (32, 665684), (38, 560576), (64, 332842), (76, 280288), (128, 166421), (152, 140144), (304, 70072), (361, 59008), (461, 46208), (608, 35036), (722, 29504), (922, 23104), (1216, 17518), (1444, 14752), (1844, 11552), (2432, 8759), (2888, 7376), (3688, 5776)]