20737790

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{199}}^1\times {\mathrm{613}}^1$

素因数の和:836

約数の個数: 32

約数和(自身を含む): 39787200

約数和(自身を除く): 19049410

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 199, 398, 613, 995, 1226, 1990, 3065, 3383, 6130, 6766, 10421, 16915, 20842, 33830, 52105, 104210, 121987, 243974, 609935, 1219870, 2073779, 4147558, 10368895, 20737790]

約数ペア:

[(1, 20737790), (2, 10368895), (5, 4147558), (10, 2073779), (17, 1219870), (34, 609935), (85, 243974), (170, 121987), (199, 104210), (398, 52105), (613, 33830), (995, 20842), (1226, 16915), (1990, 10421), (3065, 6766), (3383, 6130)]