81879668

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{42557}}^1$

素因数の和:42611

約数の個数: 24

約数和(自身を含む): 158485992

約数和(自身を除く): 76606324

約数列:

[1, 2, 4, 13, 26, 37, 52, 74, 148, 481, 962, 1924, 42557, 85114, 170228, 553241, 1106482, 1574609, 2212964, 3149218, 6298436, 20469917, 40939834, 81879668]

約数ペア:

[(1, 81879668), (2, 40939834), (4, 20469917), (13, 6298436), (26, 3149218), (37, 2212964), (52, 1574609), (74, 1106482), (148, 553241), (481, 170228), (962, 85114), (1924, 42557)]