19976020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{1433}}^1$

素因数の和:1500

約数の個数: 48

約数和(自身を含む): 45532368

約数和(自身を除く): 25556348

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 68, 82, 85, 164, 170, 205, 340, 410, 697, 820, 1394, 1433, 2788, 2866, 3485, 5732, 6970, 7165, 13940, 14330, 24361, 28660, 48722, 58753, 97444, 117506, 121805, 235012, 243610, 293765, 487220, 587530, 998801, 1175060, 1997602, 3995204, 4994005, 9988010, 19976020]

約数ペア:

[(1, 19976020), (2, 9988010), (4, 4994005), (5, 3995204), (10, 1997602), (17, 1175060), (20, 998801), (34, 587530), (41, 487220), (68, 293765), (82, 243610), (85, 235012), (164, 121805), (170, 117506), (205, 97444), (340, 58753), (410, 48722), (697, 28660), (820, 24361), (1394, 14330), (1433, 13940), (2788, 7165), (2866, 6970), (3485, 5732)]