128522780

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{3121}}^1$

素因数の和:3230

約数の個数: 48

約数和(自身を含む): 283227840

約数和(自身を除く): 154705060

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 71, 116, 142, 145, 284, 290, 355, 580, 710, 1420, 2059, 3121, 4118, 6242, 8236, 10295, 12484, 15605, 20590, 31210, 41180, 62420, 90509, 181018, 221591, 362036, 443182, 452545, 886364, 905090, 1107955, 1810180, 2215910, 4431820, 6426139, 12852278, 25704556, 32130695, 64261390, 128522780]

約数ペア:

[(1, 128522780), (2, 64261390), (4, 32130695), (5, 25704556), (10, 12852278), (20, 6426139), (29, 4431820), (58, 2215910), (71, 1810180), (116, 1107955), (142, 905090), (145, 886364), (284, 452545), (290, 443182), (355, 362036), (580, 221591), (710, 181018), (1420, 90509), (2059, 62420), (3121, 41180), (4118, 31210), (6242, 20590), (8236, 15605), (10295, 12484)]