28439960

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{1627}}^1$

素因数の和:1680

約数の個数: 64

約数和(自身を含む): 70329600

約数和(自身を除く): 41889640

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 92, 95, 115, 152, 184, 190, 230, 380, 437, 460, 760, 874, 920, 1627, 1748, 2185, 3254, 3496, 4370, 6508, 8135, 8740, 13016, 16270, 17480, 30913, 32540, 37421, 61826, 65080, 74842, 123652, 149684, 154565, 187105, 247304, 299368, 309130, 374210, 618260, 710999, 748420, 1236520, 1421998, 1496840, 2843996, 3554995, 5687992, 7109990, 14219980, 28439960]

約数ペア:

[(1, 28439960), (2, 14219980), (4, 7109990), (5, 5687992), (8, 3554995), (10, 2843996), (19, 1496840), (20, 1421998), (23, 1236520), (38, 748420), (40, 710999), (46, 618260), (76, 374210), (92, 309130), (95, 299368), (115, 247304), (152, 187105), (184, 154565), (190, 149684), (230, 123652), (380, 74842), (437, 65080), (460, 61826), (760, 37421), (874, 32540), (920, 30913), (1627, 17480), (1748, 16270), (2185, 13016), (3254, 8740), (3496, 8135), (4370, 6508)]