19954864

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1601}}^1$

素因数の和:1669

約数の個数: 40

約数和(自身を含む): 41716080

約数和(自身を除く): 21761216

約数列:

[1, 2, 4, 8, 16, 19, 38, 41, 76, 82, 152, 164, 304, 328, 656, 779, 1558, 1601, 3116, 3202, 6232, 6404, 12464, 12808, 25616, 30419, 60838, 65641, 121676, 131282, 243352, 262564, 486704, 525128, 1050256, 1247179, 2494358, 4988716, 9977432, 19954864]

約数ペア:

[(1, 19954864), (2, 9977432), (4, 4988716), (8, 2494358), (16, 1247179), (19, 1050256), (38, 525128), (41, 486704), (76, 262564), (82, 243352), (152, 131282), (164, 121676), (304, 65641), (328, 60838), (656, 30419), (779, 25616), (1558, 12808), (1601, 12464), (3116, 6404), (3202, 6232)]