21104020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{150743}}^1$

素因数の和:150759

約数の個数: 24

約数和(自身を含む): 50649984

約数和(自身を除く): 29545964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 150743, 301486, 602972, 753715, 1055201, 1507430, 2110402, 3014860, 4220804, 5276005, 10552010, 21104020]

約数ペア:

[(1, 21104020), (2, 10552010), (4, 5276005), (5, 4220804), (7, 3014860), (10, 2110402), (14, 1507430), (20, 1055201), (28, 753715), (35, 602972), (70, 301486), (140, 150743)]