21503856

素因数分解:

$2^4\times 3^1\times {\mathrm{11}}^1\times {\mathrm{139}}^1\times {\mathrm{293}}^1$

素因数の和:454

約数の個数: 80

約数和(自身を含む): 61246080

約数和(自身を除く): 39742224

約数列:

[1, 2, 3, 4, 6, 8, 11, 12, 16, 22, 24, 33, 44, 48, 66, 88, 132, 139, 176, 264, 278, 293, 417, 528, 556, 586, 834, 879, 1112, 1172, 1529, 1668, 1758, 2224, 2344, 3058, 3223, 3336, 3516, 4587, 4688, 6116, 6446, 6672, 7032, 9174, 9669, 12232, 12892, 14064, 18348, 19338, 24464, 25784, 36696, 38676, 40727, 51568, 73392, 77352, 81454, 122181, 154704, 162908, 244362, 325816, 447997, 488724, 651632, 895994, 977448, 1343991, 1791988, 1954896, 2687982, 3583976, 5375964, 7167952, 10751928, 21503856]

約数ペア:

[(1, 21503856), (2, 10751928), (3, 7167952), (4, 5375964), (6, 3583976), (8, 2687982), (11, 1954896), (12, 1791988), (16, 1343991), (22, 977448), (24, 895994), (33, 651632), (44, 488724), (48, 447997), (66, 325816), (88, 244362), (132, 162908), (139, 154704), (176, 122181), (264, 81454), (278, 77352), (293, 73392), (417, 51568), (528, 40727), (556, 38676), (586, 36696), (834, 25784), (879, 24464), (1112, 19338), (1172, 18348), (1529, 14064), (1668, 12892), (1758, 12232), (2224, 9669), (2344, 9174), (3058, 7032), (3223, 6672), (3336, 6446), (3516, 6116), (4587, 4688)]