20566520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{39551}}^1$

素因数の和:39575

約数の個数: 32

約数和(自身を含む): 49835520

約数和(自身を除く): 29269000

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 39551, 79102, 158204, 197755, 316408, 395510, 514163, 791020, 1028326, 1582040, 2056652, 2570815, 4113304, 5141630, 10283260, 20566520]

約数ペア:

[(1, 20566520), (2, 10283260), (4, 5141630), (5, 4113304), (8, 2570815), (10, 2056652), (13, 1582040), (20, 1028326), (26, 791020), (40, 514163), (52, 395510), (65, 316408), (104, 197755), (130, 158204), (260, 79102), (520, 39551)]