28488040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{1433}}^1$

素因数の和:1522

約数の個数: 64

約数和(自身を含む): 74338560

約数和(自身を除く): 45850520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 71, 140, 142, 280, 284, 355, 497, 568, 710, 994, 1420, 1433, 1988, 2485, 2840, 2866, 3976, 4970, 5732, 7165, 9940, 10031, 11464, 14330, 19880, 20062, 28660, 40124, 50155, 57320, 80248, 100310, 101743, 200620, 203486, 401240, 406972, 508715, 712201, 813944, 1017430, 1424402, 2034860, 2848804, 3561005, 4069720, 5697608, 7122010, 14244020, 28488040]

約数ペア:

[(1, 28488040), (2, 14244020), (4, 7122010), (5, 5697608), (7, 4069720), (8, 3561005), (10, 2848804), (14, 2034860), (20, 1424402), (28, 1017430), (35, 813944), (40, 712201), (56, 508715), (70, 406972), (71, 401240), (140, 203486), (142, 200620), (280, 101743), (284, 100310), (355, 80248), (497, 57320), (568, 50155), (710, 40124), (994, 28660), (1420, 20062), (1433, 19880), (1988, 14330), (2485, 11464), (2840, 10031), (2866, 9940), (3976, 7165), (4970, 5732)]