21875120

素因数分解:

$2^4\times 5^1\times {\mathrm{271}}^1\times {\mathrm{1009}}^1$

素因数の和:1293

約数の個数: 40

約数和(自身を含む): 51097920

約数和(自身を除く): 29222800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 271, 542, 1009, 1084, 1355, 2018, 2168, 2710, 4036, 4336, 5045, 5420, 8072, 10090, 10840, 16144, 20180, 21680, 40360, 80720, 273439, 546878, 1093756, 1367195, 2187512, 2734390, 4375024, 5468780, 10937560, 21875120]

約数ペア:

[(1, 21875120), (2, 10937560), (4, 5468780), (5, 4375024), (8, 2734390), (10, 2187512), (16, 1367195), (20, 1093756), (40, 546878), (80, 273439), (271, 80720), (542, 40360), (1009, 21680), (1084, 20180), (1355, 16144), (2018, 10840), (2168, 10090), (2710, 8072), (4036, 5420), (4336, 5045)]