28105805

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{223}}^1\times {\mathrm{277}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 41846784

約数和(自身を除く): 13740979

約数列:

[1, 5, 7, 13, 35, 65, 91, 223, 277, 455, 1115, 1385, 1561, 1939, 2899, 3601, 7805, 9695, 14495, 18005, 20293, 25207, 61771, 101465, 126035, 308855, 432397, 803023, 2161985, 4015115, 5621161, 28105805]

約数ペア:

[(1, 28105805), (5, 5621161), (7, 4015115), (13, 2161985), (35, 803023), (65, 432397), (91, 308855), (223, 126035), (277, 101465), (455, 61771), (1115, 25207), (1385, 20293), (1561, 18005), (1939, 14495), (2899, 9695), (3601, 7805)]