16820860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{137}}^1\times {\mathrm{877}}^1$

素因数の和:1030

約数の個数: 48

約数和(自身を含む): 40711104

約数和(自身を除く): 23890244

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 137, 140, 274, 548, 685, 877, 959, 1370, 1754, 1918, 2740, 3508, 3836, 4385, 4795, 6139, 8770, 9590, 12278, 17540, 19180, 24556, 30695, 61390, 120149, 122780, 240298, 480596, 600745, 841043, 1201490, 1682086, 2402980, 3364172, 4205215, 8410430, 16820860]

約数ペア:

[(1, 16820860), (2, 8410430), (4, 4205215), (5, 3364172), (7, 2402980), (10, 1682086), (14, 1201490), (20, 841043), (28, 600745), (35, 480596), (70, 240298), (137, 122780), (140, 120149), (274, 61390), (548, 30695), (685, 24556), (877, 19180), (959, 17540), (1370, 12278), (1754, 9590), (1918, 8770), (2740, 6139), (3508, 4795), (3836, 4385)]