65721880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{234721}}^1$

素因数の和:234739

約数の個数: 32

約数和(自身を含む): 168999840

約数和(自身を除く): 103277960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 234721, 469442, 938884, 1173605, 1643047, 1877768, 2347210, 3286094, 4694420, 6572188, 8215235, 9388840, 13144376, 16430470, 32860940, 65721880]

約数ペア:

[(1, 65721880), (2, 32860940), (4, 16430470), (5, 13144376), (7, 9388840), (8, 8215235), (10, 6572188), (14, 4694420), (20, 3286094), (28, 2347210), (35, 1877768), (40, 1643047), (56, 1173605), (70, 938884), (140, 469442), (280, 234721)]