21728291255

素因数分解:

$5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{509}}^1\times {\mathrm{1907}}^1$

素因数の和:2480

約数の個数: 48

約数和(自身を含む): 29507677920

約数和(自身を除く): 7779386665

約数列:

[1, 5, 11, 37, 55, 121, 185, 407, 509, 605, 1907, 2035, 2545, 4477, 5599, 9535, 18833, 20977, 22385, 27995, 61589, 70559, 94165, 104885, 207163, 230747, 307945, 352795, 776149, 970663, 1035815, 1153735, 2278793, 3880745, 4853315, 8537639, 10677293, 11393965, 35914531, 42688195, 53386465, 117450223, 179572655, 395059841, 587251115, 1975299205, 4345658251, 21728291255]

約数ペア:

[(1, 21728291255), (5, 4345658251), (11, 1975299205), (37, 587251115), (55, 395059841), (121, 179572655), (185, 117450223), (407, 53386465), (509, 42688195), (605, 35914531), (1907, 11393965), (2035, 10677293), (2545, 8537639), (4477, 4853315), (5599, 3880745), (9535, 2278793), (18833, 1153735), (20977, 1035815), (22385, 970663), (27995, 776149), (61589, 352795), (70559, 307945), (94165, 230747), (104885, 207163)]