20875965

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{6659}}^1$

素因数の和:6697

約数の個数: 32

約数和(自身を含む): 38361600

約数和(自身を除く): 17485635

約数列:

[1, 3, 5, 11, 15, 19, 33, 55, 57, 95, 165, 209, 285, 627, 1045, 3135, 6659, 19977, 33295, 73249, 99885, 126521, 219747, 366245, 379563, 632605, 1098735, 1391731, 1897815, 4175193, 6958655, 20875965]

約数ペア:

[(1, 20875965), (3, 6958655), (5, 4175193), (11, 1897815), (15, 1391731), (19, 1098735), (33, 632605), (55, 379563), (57, 366245), (95, 219747), (165, 126521), (209, 99885), (285, 73249), (627, 33295), (1045, 19977), (3135, 6659)]