28238780

素因数分解:

$2^2\times 5^1\times {\mathrm{619}}^1\times {\mathrm{2281}}^1$

素因数の和:2909

約数の個数: 24

約数和(自身を含む): 59423280

約数和(自身を除く): 31184500

約数列:

[1, 2, 4, 5, 10, 20, 619, 1238, 2281, 2476, 3095, 4562, 6190, 9124, 11405, 12380, 22810, 45620, 1411939, 2823878, 5647756, 7059695, 14119390, 28238780]

約数ペア:

[(1, 28238780), (2, 14119390), (4, 7059695), (5, 5647756), (10, 2823878), (20, 1411939), (619, 45620), (1238, 22810), (2281, 12380), (2476, 11405), (3095, 9124), (4562, 6190)]