21424760

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{643}}^1$

素因数の和:685

約数の個数: 96

約数和(自身を含む): 59466960

約数和(自身を除く): 38042200

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 85, 98, 119, 136, 140, 170, 196, 238, 245, 280, 340, 392, 476, 490, 595, 643, 680, 833, 952, 980, 1190, 1286, 1666, 1960, 2380, 2572, 3215, 3332, 4165, 4501, 4760, 5144, 6430, 6664, 8330, 9002, 10931, 12860, 16660, 18004, 21862, 22505, 25720, 31507, 33320, 36008, 43724, 45010, 54655, 63014, 76517, 87448, 90020, 109310, 126028, 153034, 157535, 180040, 218620, 252056, 306068, 315070, 382585, 437240, 535619, 612136, 630140, 765170, 1071238, 1260280, 1530340, 2142476, 2678095, 3060680, 4284952, 5356190, 10712380, 21424760]

約数ペア:

[(1, 21424760), (2, 10712380), (4, 5356190), (5, 4284952), (7, 3060680), (8, 2678095), (10, 2142476), (14, 1530340), (17, 1260280), (20, 1071238), (28, 765170), (34, 630140), (35, 612136), (40, 535619), (49, 437240), (56, 382585), (68, 315070), (70, 306068), (85, 252056), (98, 218620), (119, 180040), (136, 157535), (140, 153034), (170, 126028), (196, 109310), (238, 90020), (245, 87448), (280, 76517), (340, 63014), (392, 54655), (476, 45010), (490, 43724), (595, 36008), (643, 33320), (680, 31507), (833, 25720), (952, 22505), (980, 21862), (1190, 18004), (1286, 16660), (1666, 12860), (1960, 10931), (2380, 9002), (2572, 8330), (3215, 6664), (3332, 6430), (4165, 5144), (4501, 4760)]