20520990

素因数分解:

$2^1\times 3^2\times 5^1\times 7^1\times {\mathrm{32573}}^1$

素因数の和:32593

約数の個数: 48

約数和(自身を含む): 60978528

約数和(自身を除く): 40457538

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 30, 35, 42, 45, 63, 70, 90, 105, 126, 210, 315, 630, 32573, 65146, 97719, 162865, 195438, 228011, 293157, 325730, 456022, 488595, 586314, 684033, 977190, 1140055, 1368066, 1465785, 2052099, 2280110, 2931570, 3420165, 4104198, 6840330, 10260495, 20520990]

約数ペア:

[(1, 20520990), (2, 10260495), (3, 6840330), (5, 4104198), (6, 3420165), (7, 2931570), (9, 2280110), (10, 2052099), (14, 1465785), (15, 1368066), (18, 1140055), (21, 977190), (30, 684033), (35, 586314), (42, 488595), (45, 456022), (63, 325730), (70, 293157), (90, 228011), (105, 195438), (126, 162865), (210, 97719), (315, 65146), (630, 32573)]