21355400

素因数分解:

$2^3\times 5^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{571}}^1$

素因数の和:615

約数の個数: 96

約数和(自身を含む): 57451680

約数和(自身を除く): 36096280

約数列:

[1, 2, 4, 5, 8, 10, 11, 17, 20, 22, 25, 34, 40, 44, 50, 55, 68, 85, 88, 100, 110, 136, 170, 187, 200, 220, 275, 340, 374, 425, 440, 550, 571, 680, 748, 850, 935, 1100, 1142, 1496, 1700, 1870, 2200, 2284, 2855, 3400, 3740, 4568, 4675, 5710, 6281, 7480, 9350, 9707, 11420, 12562, 14275, 18700, 19414, 22840, 25124, 28550, 31405, 37400, 38828, 48535, 50248, 57100, 62810, 77656, 97070, 106777, 114200, 125620, 157025, 194140, 213554, 242675, 251240, 314050, 388280, 427108, 485350, 533885, 628100, 854216, 970700, 1067770, 1256200, 1941400, 2135540, 2669425, 4271080, 5338850, 10677700, 21355400]

約数ペア:

[(1, 21355400), (2, 10677700), (4, 5338850), (5, 4271080), (8, 2669425), (10, 2135540), (11, 1941400), (17, 1256200), (20, 1067770), (22, 970700), (25, 854216), (34, 628100), (40, 533885), (44, 485350), (50, 427108), (55, 388280), (68, 314050), (85, 251240), (88, 242675), (100, 213554), (110, 194140), (136, 157025), (170, 125620), (187, 114200), (200, 106777), (220, 97070), (275, 77656), (340, 62810), (374, 57100), (425, 50248), (440, 48535), (550, 38828), (571, 37400), (680, 31405), (748, 28550), (850, 25124), (935, 22840), (1100, 19414), (1142, 18700), (1496, 14275), (1700, 12562), (1870, 11420), (2200, 9707), (2284, 9350), (2855, 7480), (3400, 6281), (3740, 5710), (4568, 4675)]