21527275

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{211}}^1$

素因数の和:292

約数の個数: 48

約数和(自身を含む): 34069248

約数和(自身を除く): 12541973

約数列:

[1, 5, 7, 11, 25, 35, 53, 55, 77, 175, 211, 265, 275, 371, 385, 583, 1055, 1325, 1477, 1855, 1925, 2321, 2915, 4081, 5275, 7385, 9275, 11183, 11605, 14575, 16247, 20405, 36925, 55915, 58025, 78281, 81235, 102025, 123013, 279575, 391405, 406175, 615065, 861091, 1957025, 3075325, 4305455, 21527275]

約数ペア:

[(1, 21527275), (5, 4305455), (7, 3075325), (11, 1957025), (25, 861091), (35, 615065), (53, 406175), (55, 391405), (77, 279575), (175, 123013), (211, 102025), (265, 81235), (275, 78281), (371, 58025), (385, 55915), (583, 36925), (1055, 20405), (1325, 16247), (1477, 14575), (1855, 11605), (1925, 11183), (2321, 9275), (2915, 7385), (4081, 5275)]