128668870

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{401}}^1\times {\mathrm{2917}}^1$

素因数の和:3336

約数の個数: 32

約数和(自身を含む): 253375776

約数和(自身を除く): 124706906

約数列:

[1, 2, 5, 10, 11, 22, 55, 110, 401, 802, 2005, 2917, 4010, 4411, 5834, 8822, 14585, 22055, 29170, 32087, 44110, 64174, 160435, 320870, 1169717, 2339434, 5848585, 11697170, 12866887, 25733774, 64334435, 128668870]

約数ペア:

[(1, 128668870), (2, 64334435), (5, 25733774), (10, 12866887), (11, 11697170), (22, 5848585), (55, 2339434), (110, 1169717), (401, 320870), (802, 160435), (2005, 64174), (2917, 44110), (4010, 32087), (4411, 29170), (5834, 22055), (8822, 14585)]