28292720

素因数分解:

$2^4\times 5^1\times {\mathrm{251}}^1\times {\mathrm{1409}}^1$

素因数の和:1673

約数の個数: 40

約数和(自身を含む): 66089520

約数和(自身を除く): 37796800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 251, 502, 1004, 1255, 1409, 2008, 2510, 2818, 4016, 5020, 5636, 7045, 10040, 11272, 14090, 20080, 22544, 28180, 56360, 112720, 353659, 707318, 1414636, 1768295, 2829272, 3536590, 5658544, 7073180, 14146360, 28292720]

約数ペア:

[(1, 28292720), (2, 14146360), (4, 7073180), (5, 5658544), (8, 3536590), (10, 2829272), (16, 1768295), (20, 1414636), (40, 707318), (80, 353659), (251, 112720), (502, 56360), (1004, 28180), (1255, 22544), (1409, 20080), (2008, 14090), (2510, 11272), (2818, 10040), (4016, 7045), (5020, 5636)]