13203640

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1$

素因数の和:232

約数の個数: 64

約数和(自身を含む): 31116960

約数和(自身を除く): 17913320

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 83, 97, 164, 166, 194, 205, 328, 332, 388, 410, 415, 485, 664, 776, 820, 830, 970, 1640, 1660, 1940, 3320, 3403, 3880, 3977, 6806, 7954, 8051, 13612, 15908, 16102, 17015, 19885, 27224, 31816, 32204, 34030, 39770, 40255, 64408, 68060, 79540, 80510, 136120, 159080, 161020, 322040, 330091, 660182, 1320364, 1650455, 2640728, 3300910, 6601820, 13203640]

約数ペア:

[(1, 13203640), (2, 6601820), (4, 3300910), (5, 2640728), (8, 1650455), (10, 1320364), (20, 660182), (40, 330091), (41, 322040), (82, 161020), (83, 159080), (97, 136120), (164, 80510), (166, 79540), (194, 68060), (205, 64408), (328, 40255), (332, 39770), (388, 34030), (410, 32204), (415, 31816), (485, 27224), (664, 19885), (776, 17015), (820, 16102), (830, 15908), (970, 13612), (1640, 8051), (1660, 7954), (1940, 6806), (3320, 3977), (3403, 3880)]