21898040

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{32203}}^1$

素因数の和:32231

約数の個数: 32

約数和(自身を含む): 52170480

約数和(自身を除く): 30272440

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 32203, 64406, 128812, 161015, 257624, 322030, 547451, 644060, 1094902, 1288120, 2189804, 2737255, 4379608, 5474510, 10949020, 21898040]

約数ペア:

[(1, 21898040), (2, 10949020), (4, 5474510), (5, 4379608), (8, 2737255), (10, 2189804), (17, 1288120), (20, 1094902), (34, 644060), (40, 547451), (68, 322030), (85, 257624), (136, 161015), (170, 128812), (340, 64406), (680, 32203)]