20495110

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{269}}^1\times {\mathrm{401}}^1$

素因数の和:696

約数の個数: 32

約数和(自身を含む): 39074400

約数和(自身を除く): 18579290

約数列:

[1, 2, 5, 10, 19, 38, 95, 190, 269, 401, 538, 802, 1345, 2005, 2690, 4010, 5111, 7619, 10222, 15238, 25555, 38095, 51110, 76190, 107869, 215738, 539345, 1078690, 2049511, 4099022, 10247555, 20495110]

約数ペア:

[(1, 20495110), (2, 10247555), (5, 4099022), (10, 2049511), (19, 1078690), (38, 539345), (95, 215738), (190, 107869), (269, 76190), (401, 51110), (538, 38095), (802, 25555), (1345, 15238), (2005, 10222), (2690, 7619), (4010, 5111)]