254802640

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{127}}^1\times {\mathrm{809}}^1$

素因数の和:980

約数の個数: 80

約数和(自身を含む): 617103360

約数和(自身を除く): 362300720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 127, 155, 248, 254, 310, 496, 508, 620, 635, 809, 1016, 1240, 1270, 1618, 2032, 2480, 2540, 3236, 3937, 4045, 5080, 6472, 7874, 8090, 10160, 12944, 15748, 16180, 19685, 25079, 31496, 32360, 39370, 50158, 62992, 64720, 78740, 100316, 102743, 125395, 157480, 200632, 205486, 250790, 314960, 401264, 410972, 501580, 513715, 821944, 1003160, 1027430, 1643888, 2006320, 2054860, 3185033, 4109720, 6370066, 8219440, 12740132, 15925165, 25480264, 31850330, 50960528, 63700660, 127401320, 254802640]

約数ペア:

[(1, 254802640), (2, 127401320), (4, 63700660), (5, 50960528), (8, 31850330), (10, 25480264), (16, 15925165), (20, 12740132), (31, 8219440), (40, 6370066), (62, 4109720), (80, 3185033), (124, 2054860), (127, 2006320), (155, 1643888), (248, 1027430), (254, 1003160), (310, 821944), (496, 513715), (508, 501580), (620, 410972), (635, 401264), (809, 314960), (1016, 250790), (1240, 205486), (1270, 200632), (1618, 157480), (2032, 125395), (2480, 102743), (2540, 100316), (3236, 78740), (3937, 64720), (4045, 62992), (5080, 50158), (6472, 39370), (7874, 32360), (8090, 31496), (10160, 25079), (12944, 19685), (15748, 16180)]