21259360

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{53}}^1\times {\mathrm{109}}^1$

素因数の和:200

約数の個数: 96

約数和(自身を含む): 53887680

約数和(自身を除く): 32628320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 53, 80, 92, 106, 109, 115, 160, 184, 212, 218, 230, 265, 368, 424, 436, 460, 530, 545, 736, 848, 872, 920, 1060, 1090, 1219, 1696, 1744, 1840, 2120, 2180, 2438, 2507, 3488, 3680, 4240, 4360, 4876, 5014, 5777, 6095, 8480, 8720, 9752, 10028, 11554, 12190, 12535, 17440, 19504, 20056, 23108, 24380, 25070, 28885, 39008, 40112, 46216, 48760, 50140, 57770, 80224, 92432, 97520, 100280, 115540, 132871, 184864, 195040, 200560, 231080, 265742, 401120, 462160, 531484, 664355, 924320, 1062968, 1328710, 2125936, 2657420, 4251872, 5314840, 10629680, 21259360]

約数ペア:

[(1, 21259360), (2, 10629680), (4, 5314840), (5, 4251872), (8, 2657420), (10, 2125936), (16, 1328710), (20, 1062968), (23, 924320), (32, 664355), (40, 531484), (46, 462160), (53, 401120), (80, 265742), (92, 231080), (106, 200560), (109, 195040), (115, 184864), (160, 132871), (184, 115540), (212, 100280), (218, 97520), (230, 92432), (265, 80224), (368, 57770), (424, 50140), (436, 48760), (460, 46216), (530, 40112), (545, 39008), (736, 28885), (848, 25070), (872, 24380), (920, 23108), (1060, 20056), (1090, 19504), (1219, 17440), (1696, 12535), (1744, 12190), (1840, 11554), (2120, 10028), (2180, 9752), (2438, 8720), (2507, 8480), (3488, 6095), (3680, 5777), (4240, 5014), (4360, 4876)]