18780016

素因数分解:

$2^4\times {\mathrm{37}}^1\times {\mathrm{31723}}^1$

素因数の和:31768

約数の個数: 20

約数和(自身を含む): 37370872

約数和(自身を除く): 18590856

約数列:

[1, 2, 4, 8, 16, 37, 74, 148, 296, 592, 31723, 63446, 126892, 253784, 507568, 1173751, 2347502, 4695004, 9390008, 18780016]

約数ペア:

[(1, 18780016), (2, 9390008), (4, 4695004), (8, 2347502), (16, 1173751), (37, 507568), (74, 253784), (148, 126892), (296, 63446), (592, 31723)]