257131420

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{20183}}^1$

素因数の和:20219

約数の個数: 72

約数和(自身を含む): 676486944

約数和(自身を除く): 419355524

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 26, 28, 35, 49, 52, 65, 70, 91, 98, 130, 140, 182, 196, 245, 260, 364, 455, 490, 637, 910, 980, 1274, 1820, 2548, 3185, 6370, 12740, 20183, 40366, 80732, 100915, 141281, 201830, 262379, 282562, 403660, 524758, 565124, 706405, 988967, 1049516, 1311895, 1412810, 1836653, 1977934, 2623790, 2825620, 3673306, 3955868, 4944835, 5247580, 7346612, 9183265, 9889670, 12856571, 18366530, 19779340, 25713142, 36733060, 51426284, 64282855, 128565710, 257131420]

約数ペア:

[(1, 257131420), (2, 128565710), (4, 64282855), (5, 51426284), (7, 36733060), (10, 25713142), (13, 19779340), (14, 18366530), (20, 12856571), (26, 9889670), (28, 9183265), (35, 7346612), (49, 5247580), (52, 4944835), (65, 3955868), (70, 3673306), (91, 2825620), (98, 2623790), (130, 1977934), (140, 1836653), (182, 1412810), (196, 1311895), (245, 1049516), (260, 988967), (364, 706405), (455, 565124), (490, 524758), (637, 403660), (910, 282562), (980, 262379), (1274, 201830), (1820, 141281), (2548, 100915), (3185, 80732), (6370, 40366), (12740, 20183)]