19934420

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^2\times {\mathrm{251}}^1$

素因数の和:309

約数の個数: 72

約数和(自身を含む): 48390048

約数和(自身を除く): 28455628

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 38, 44, 55, 76, 95, 110, 190, 209, 220, 251, 361, 380, 418, 502, 722, 836, 1004, 1045, 1255, 1444, 1805, 2090, 2510, 2761, 3610, 3971, 4180, 4769, 5020, 5522, 7220, 7942, 9538, 11044, 13805, 15884, 19076, 19855, 23845, 27610, 39710, 47690, 52459, 55220, 79420, 90611, 95380, 104918, 181222, 209836, 262295, 362444, 453055, 524590, 906110, 996721, 1049180, 1812220, 1993442, 3986884, 4983605, 9967210, 19934420]

約数ペア:

[(1, 19934420), (2, 9967210), (4, 4983605), (5, 3986884), (10, 1993442), (11, 1812220), (19, 1049180), (20, 996721), (22, 906110), (38, 524590), (44, 453055), (55, 362444), (76, 262295), (95, 209836), (110, 181222), (190, 104918), (209, 95380), (220, 90611), (251, 79420), (361, 55220), (380, 52459), (418, 47690), (502, 39710), (722, 27610), (836, 23845), (1004, 19855), (1045, 19076), (1255, 15884), (1444, 13805), (1805, 11044), (2090, 9538), (2510, 7942), (2761, 7220), (3610, 5522), (3971, 5020), (4180, 4769)]