21532840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{1451}}^1$

素因数の和:1522

約数の個数: 64

約数和(自身を含む): 56453760

約数和(自身を除く): 34920920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 53, 56, 70, 106, 140, 212, 265, 280, 371, 424, 530, 742, 1060, 1451, 1484, 1855, 2120, 2902, 2968, 3710, 5804, 7255, 7420, 10157, 11608, 14510, 14840, 20314, 29020, 40628, 50785, 58040, 76903, 81256, 101570, 153806, 203140, 307612, 384515, 406280, 538321, 615224, 769030, 1076642, 1538060, 2153284, 2691605, 3076120, 4306568, 5383210, 10766420, 21532840]

約数ペア:

[(1, 21532840), (2, 10766420), (4, 5383210), (5, 4306568), (7, 3076120), (8, 2691605), (10, 2153284), (14, 1538060), (20, 1076642), (28, 769030), (35, 615224), (40, 538321), (53, 406280), (56, 384515), (70, 307612), (106, 203140), (140, 153806), (212, 101570), (265, 81256), (280, 76903), (371, 58040), (424, 50785), (530, 40628), (742, 29020), (1060, 20314), (1451, 14840), (1484, 14510), (1855, 11608), (2120, 10157), (2902, 7420), (2968, 7255), (3710, 5804)]