20568690

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{449}}^1\times {\mathrm{509}}^1$

素因数の和:971

約数の個数: 48

約数和(自身を含む): 53703000

約数和(自身を除く): 33134310

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 449, 509, 898, 1018, 1347, 1527, 2245, 2545, 2694, 3054, 4041, 4490, 4581, 5090, 6735, 7635, 8082, 9162, 13470, 15270, 20205, 22905, 40410, 45810, 228541, 457082, 685623, 1142705, 1371246, 2056869, 2285410, 3428115, 4113738, 6856230, 10284345, 20568690]

約数ペア:

[(1, 20568690), (2, 10284345), (3, 6856230), (5, 4113738), (6, 3428115), (9, 2285410), (10, 2056869), (15, 1371246), (18, 1142705), (30, 685623), (45, 457082), (90, 228541), (449, 45810), (509, 40410), (898, 22905), (1018, 20205), (1347, 15270), (1527, 13470), (2245, 9162), (2545, 8082), (2694, 7635), (3054, 6735), (4041, 5090), (4490, 4581)]