19553740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^3\times {\mathrm{199}}^1$

素因数の和:259

約数の個数: 48

約数和(自身を含む): 43848000

約数和(自身を除く): 24294260

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 85, 170, 199, 289, 340, 398, 578, 796, 995, 1156, 1445, 1990, 2890, 3383, 3980, 4913, 5780, 6766, 9826, 13532, 16915, 19652, 24565, 33830, 49130, 57511, 67660, 98260, 115022, 230044, 287555, 575110, 977687, 1150220, 1955374, 3910748, 4888435, 9776870, 19553740]

約数ペア:

[(1, 19553740), (2, 9776870), (4, 4888435), (5, 3910748), (10, 1955374), (17, 1150220), (20, 977687), (34, 575110), (68, 287555), (85, 230044), (170, 115022), (199, 98260), (289, 67660), (340, 57511), (398, 49130), (578, 33830), (796, 24565), (995, 19652), (1156, 16915), (1445, 13532), (1990, 9826), (2890, 6766), (3383, 5780), (3980, 4913)]