27402980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{431}}^1$

素因数の和:485

約数の個数: 72

約数和(自身を含む): 66842496

約数和(自身を除く): 39439516

約数列:

[1, 2, 4, 5, 10, 11, 17, 20, 22, 34, 44, 55, 68, 85, 110, 170, 187, 220, 289, 340, 374, 431, 578, 748, 862, 935, 1156, 1445, 1724, 1870, 2155, 2890, 3179, 3740, 4310, 4741, 5780, 6358, 7327, 8620, 9482, 12716, 14654, 15895, 18964, 23705, 29308, 31790, 36635, 47410, 63580, 73270, 80597, 94820, 124559, 146540, 161194, 249118, 322388, 402985, 498236, 622795, 805970, 1245590, 1370149, 1611940, 2491180, 2740298, 5480596, 6850745, 13701490, 27402980]

約数ペア:

[(1, 27402980), (2, 13701490), (4, 6850745), (5, 5480596), (10, 2740298), (11, 2491180), (17, 1611940), (20, 1370149), (22, 1245590), (34, 805970), (44, 622795), (55, 498236), (68, 402985), (85, 322388), (110, 249118), (170, 161194), (187, 146540), (220, 124559), (289, 94820), (340, 80597), (374, 73270), (431, 63580), (578, 47410), (748, 36635), (862, 31790), (935, 29308), (1156, 23705), (1445, 18964), (1724, 15895), (1870, 14654), (2155, 12716), (2890, 9482), (3179, 8620), (3740, 7327), (4310, 6358), (4741, 5780)]