28876280

素因数分解:

$2^3\times 5^1\times {\mathrm{37}}^1\times {\mathrm{109}}^1\times {\mathrm{179}}^1$

素因数の和:336

約数の個数: 64

約数和(自身を含む): 67716000

約数和(自身を除く): 38839720

約数列:

[1, 2, 4, 5, 8, 10, 20, 37, 40, 74, 109, 148, 179, 185, 218, 296, 358, 370, 436, 545, 716, 740, 872, 895, 1090, 1432, 1480, 1790, 2180, 3580, 4033, 4360, 6623, 7160, 8066, 13246, 16132, 19511, 20165, 26492, 32264, 33115, 39022, 40330, 52984, 66230, 78044, 80660, 97555, 132460, 156088, 161320, 195110, 264920, 390220, 721907, 780440, 1443814, 2887628, 3609535, 5775256, 7219070, 14438140, 28876280]

約数ペア:

[(1, 28876280), (2, 14438140), (4, 7219070), (5, 5775256), (8, 3609535), (10, 2887628), (20, 1443814), (37, 780440), (40, 721907), (74, 390220), (109, 264920), (148, 195110), (179, 161320), (185, 156088), (218, 132460), (296, 97555), (358, 80660), (370, 78044), (436, 66230), (545, 52984), (716, 40330), (740, 39022), (872, 33115), (895, 32264), (1090, 26492), (1432, 20165), (1480, 19511), (1790, 16132), (2180, 13246), (3580, 8066), (4033, 7160), (4360, 6623)]