20787055980

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{521}}^1\times {\mathrm{664973}}^1$

素因数の和:665506

約数の個数: 48

約数和(自身を含む): 58315559904

約数和(自身を除く): 37528503924

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 521, 1042, 1563, 2084, 2605, 3126, 5210, 6252, 7815, 10420, 15630, 31260, 664973, 1329946, 1994919, 2659892, 3324865, 3989838, 6649730, 7979676, 9974595, 13299460, 19949190, 39898380, 346450933, 692901866, 1039352799, 1385803732, 1732254665, 2078705598, 3464509330, 4157411196, 5196763995, 6929018660, 10393527990, 20787055980]

約数ペア:

[(1, 20787055980), (2, 10393527990), (3, 6929018660), (4, 5196763995), (5, 4157411196), (6, 3464509330), (10, 2078705598), (12, 1732254665), (15, 1385803732), (20, 1039352799), (30, 692901866), (60, 346450933), (521, 39898380), (1042, 19949190), (1563, 13299460), (2084, 9974595), (2605, 7979676), (3126, 6649730), (5210, 3989838), (6252, 3324865), (7815, 2659892), (10420, 1994919), (15630, 1329946), (31260, 664973)]