81149360

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{19139}}^1$

素因数の和:19205

約数の個数: 40

約数和(自身を含む): 192242160

約数和(自身を除く): 111092800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 212, 265, 424, 530, 848, 1060, 2120, 4240, 19139, 38278, 76556, 95695, 153112, 191390, 306224, 382780, 765560, 1014367, 1531120, 2028734, 4057468, 5071835, 8114936, 10143670, 16229872, 20287340, 40574680, 81149360]

約数ペア:

[(1, 81149360), (2, 40574680), (4, 20287340), (5, 16229872), (8, 10143670), (10, 8114936), (16, 5071835), (20, 4057468), (40, 2028734), (53, 1531120), (80, 1014367), (106, 765560), (212, 382780), (265, 306224), (424, 191390), (530, 153112), (848, 95695), (1060, 76556), (2120, 38278), (4240, 19139)]