81959780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{151}}^1\times {\mathrm{3877}}^1$

素因数の和:4044

約数の個数: 48

約数和(自身を含む): 198057216

約数和(自身を除く): 116097436

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 151, 302, 604, 755, 1057, 1510, 2114, 3020, 3877, 4228, 5285, 7754, 10570, 15508, 19385, 21140, 27139, 38770, 54278, 77540, 108556, 135695, 271390, 542780, 585427, 1170854, 2341708, 2927135, 4097989, 5854270, 8195978, 11708540, 16391956, 20489945, 40979890, 81959780]

約数ペア:

[(1, 81959780), (2, 40979890), (4, 20489945), (5, 16391956), (7, 11708540), (10, 8195978), (14, 5854270), (20, 4097989), (28, 2927135), (35, 2341708), (70, 1170854), (140, 585427), (151, 542780), (302, 271390), (604, 135695), (755, 108556), (1057, 77540), (1510, 54278), (2114, 38770), (3020, 27139), (3877, 21140), (4228, 19385), (5285, 15508), (7754, 10570)]