20898290

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{827}}^1$

素因数の和:879

約数の個数: 48

約数和(自身を含む): 45427392

約数和(自身を除く): 24529102

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 361, 665, 722, 827, 1330, 1654, 1805, 2527, 3610, 4135, 5054, 5789, 8270, 11578, 12635, 15713, 25270, 28945, 31426, 57890, 78565, 109991, 157130, 219982, 298547, 549955, 597094, 1099910, 1492735, 2089829, 2985470, 4179658, 10449145, 20898290]

約数ペア:

[(1, 20898290), (2, 10449145), (5, 4179658), (7, 2985470), (10, 2089829), (14, 1492735), (19, 1099910), (35, 597094), (38, 549955), (70, 298547), (95, 219982), (133, 157130), (190, 109991), (266, 78565), (361, 57890), (665, 31426), (722, 28945), (827, 25270), (1330, 15713), (1654, 12635), (1805, 11578), (2527, 8270), (3610, 5789), (4135, 5054)]