21000751145

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{257}}^1\times {\mathrm{953}}^1\times {\mathrm{1559}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 27645546240

約数和(自身を除く): 6644795095

約数列:

[1, 5, 11, 55, 257, 953, 1285, 1559, 2827, 4765, 7795, 10483, 14135, 17149, 52415, 85745, 244921, 400663, 1224605, 1485727, 2003315, 2694131, 4407293, 7428635, 13470655, 16342997, 22036465, 81714985, 381831839, 1909159195, 4200150229, 21000751145]

約数ペア:

[(1, 21000751145), (5, 4200150229), (11, 1909159195), (55, 381831839), (257, 81714985), (953, 22036465), (1285, 16342997), (1559, 13470655), (2827, 7428635), (4765, 4407293), (7795, 2694131), (10483, 2003315), (14135, 1485727), (17149, 1224605), (52415, 400663), (85745, 244921)]