40020040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{229}}^1\times {\mathrm{257}}^1$

素因数の和:514

約数の個数: 64

約数和(自身を含む): 96130800

約数和(自身を除く): 56110760

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 229, 257, 340, 458, 514, 680, 916, 1028, 1145, 1285, 1832, 2056, 2290, 2570, 3893, 4369, 4580, 5140, 7786, 8738, 9160, 10280, 15572, 17476, 19465, 21845, 31144, 34952, 38930, 43690, 58853, 77860, 87380, 117706, 155720, 174760, 235412, 294265, 470824, 588530, 1000501, 1177060, 2001002, 2354120, 4002004, 5002505, 8004008, 10005010, 20010020, 40020040]

約数ペア:

[(1, 40020040), (2, 20010020), (4, 10005010), (5, 8004008), (8, 5002505), (10, 4002004), (17, 2354120), (20, 2001002), (34, 1177060), (40, 1000501), (68, 588530), (85, 470824), (136, 294265), (170, 235412), (229, 174760), (257, 155720), (340, 117706), (458, 87380), (514, 77860), (680, 58853), (916, 43690), (1028, 38930), (1145, 34952), (1285, 31144), (1832, 21845), (2056, 19465), (2290, 17476), (2570, 15572), (3893, 10280), (4369, 9160), (4580, 8738), (5140, 7786)]