21073880

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1823}}^1$

素因数の和:1868

約数の個数: 48

約数和(自身を含む): 50397120

約数和(自身を除く): 29323240

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 289, 340, 578, 680, 1156, 1445, 1823, 2312, 2890, 3646, 5780, 7292, 9115, 11560, 14584, 18230, 30991, 36460, 61982, 72920, 123964, 154955, 247928, 309910, 526847, 619820, 1053694, 1239640, 2107388, 2634235, 4214776, 5268470, 10536940, 21073880]

約数ペア:

[(1, 21073880), (2, 10536940), (4, 5268470), (5, 4214776), (8, 2634235), (10, 2107388), (17, 1239640), (20, 1053694), (34, 619820), (40, 526847), (68, 309910), (85, 247928), (136, 154955), (170, 123964), (289, 72920), (340, 61982), (578, 36460), (680, 30991), (1156, 18230), (1445, 14584), (1823, 11560), (2312, 9115), (2890, 7292), (3646, 5780)]