19916156

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{281}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 39795840

約数和(自身を除く): 19879684

約数列:

[1, 2, 4, 13, 26, 29, 47, 52, 58, 94, 116, 188, 281, 377, 562, 611, 754, 1124, 1222, 1363, 1508, 2444, 2726, 3653, 5452, 7306, 8149, 13207, 14612, 16298, 17719, 26414, 32596, 35438, 52828, 70876, 105937, 171691, 211874, 343382, 383003, 423748, 686764, 766006, 1532012, 4979039, 9958078, 19916156]

約数ペア:

[(1, 19916156), (2, 9958078), (4, 4979039), (13, 1532012), (26, 766006), (29, 686764), (47, 423748), (52, 383003), (58, 343382), (94, 211874), (116, 171691), (188, 105937), (281, 70876), (377, 52828), (562, 35438), (611, 32596), (754, 26414), (1124, 17719), (1222, 16298), (1363, 14612), (1508, 13207), (2444, 8149), (2726, 7306), (3653, 5452)]