1555720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{89}}^1$

素因数の和:142

約数の個数: 64

約数和(自身を含む): 3888000

約数和(自身を除く): 2332280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 23, 38, 40, 46, 76, 89, 92, 95, 115, 152, 178, 184, 190, 230, 356, 380, 437, 445, 460, 712, 760, 874, 890, 920, 1691, 1748, 1780, 2047, 2185, 3382, 3496, 3560, 4094, 4370, 6764, 8188, 8455, 8740, 10235, 13528, 16376, 16910, 17480, 20470, 33820, 38893, 40940, 67640, 77786, 81880, 155572, 194465, 311144, 388930, 777860, 1555720]

約数ペア:

[(1, 1555720), (2, 777860), (4, 388930), (5, 311144), (8, 194465), (10, 155572), (19, 81880), (20, 77786), (23, 67640), (38, 40940), (40, 38893), (46, 33820), (76, 20470), (89, 17480), (92, 16910), (95, 16376), (115, 13528), (152, 10235), (178, 8740), (184, 8455), (190, 8188), (230, 6764), (356, 4370), (380, 4094), (437, 3560), (445, 3496), (460, 3382), (712, 2185), (760, 2047), (874, 1780), (890, 1748), (920, 1691)]