28221080

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{523}}^1$

素因数の和:624

約数の個数: 64

約数和(自身を含む): 67910400

約数和(自身を除く): 39689320

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 71, 76, 95, 142, 152, 190, 284, 355, 380, 523, 568, 710, 760, 1046, 1349, 1420, 2092, 2615, 2698, 2840, 4184, 5230, 5396, 6745, 9937, 10460, 10792, 13490, 19874, 20920, 26980, 37133, 39748, 49685, 53960, 74266, 79496, 99370, 148532, 185665, 198740, 297064, 371330, 397480, 705527, 742660, 1411054, 1485320, 2822108, 3527635, 5644216, 7055270, 14110540, 28221080]

約数ペア:

[(1, 28221080), (2, 14110540), (4, 7055270), (5, 5644216), (8, 3527635), (10, 2822108), (19, 1485320), (20, 1411054), (38, 742660), (40, 705527), (71, 397480), (76, 371330), (95, 297064), (142, 198740), (152, 185665), (190, 148532), (284, 99370), (355, 79496), (380, 74266), (523, 53960), (568, 49685), (710, 39748), (760, 37133), (1046, 26980), (1349, 20920), (1420, 19874), (2092, 13490), (2615, 10792), (2698, 10460), (2840, 9937), (4184, 6745), (5230, 5396)]