20664648

素因数分解:

$2^3\times 3^2\times {\mathrm{37}}^1\times {\mathrm{7757}}^1$

素因数の和:7806

約数の個数: 48

約数和(自身を含む): 57486780

約数和(自身を除く): 36822132

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 37, 72, 74, 111, 148, 222, 296, 333, 444, 666, 888, 1332, 2664, 7757, 15514, 23271, 31028, 46542, 62056, 69813, 93084, 139626, 186168, 279252, 287009, 558504, 574018, 861027, 1148036, 1722054, 2296072, 2583081, 3444108, 5166162, 6888216, 10332324, 20664648]

約数ペア:

[(1, 20664648), (2, 10332324), (3, 6888216), (4, 5166162), (6, 3444108), (8, 2583081), (9, 2296072), (12, 1722054), (18, 1148036), (24, 861027), (36, 574018), (37, 558504), (72, 287009), (74, 279252), (111, 186168), (148, 139626), (222, 93084), (296, 69813), (333, 62056), (444, 46542), (666, 31028), (888, 23271), (1332, 15514), (2664, 7757)]