21414710

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{2749}}^1$

素因数の和:2816

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 20165290

約数列:

[1, 2, 5, 10, 19, 38, 41, 82, 95, 190, 205, 410, 779, 1558, 2749, 3895, 5498, 7790, 13745, 27490, 52231, 104462, 112709, 225418, 261155, 522310, 563545, 1127090, 2141471, 4282942, 10707355, 21414710]

約数ペア:

[(1, 21414710), (2, 10707355), (5, 4282942), (10, 2141471), (19, 1127090), (38, 563545), (41, 522310), (82, 261155), (95, 225418), (190, 112709), (205, 104462), (410, 52231), (779, 27490), (1558, 13745), (2749, 7790), (3895, 5498)]