19621250

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{1427}}^1$

素因数の和:1460

約数の個数: 40

約数和(自身を含む): 40149648

約数和(自身を除く): 20528398

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 110, 125, 250, 275, 550, 625, 1250, 1375, 1427, 2750, 2854, 6875, 7135, 13750, 14270, 15697, 31394, 35675, 71350, 78485, 156970, 178375, 356750, 392425, 784850, 891875, 1783750, 1962125, 3924250, 9810625, 19621250]

約数ペア:

[(1, 19621250), (2, 9810625), (5, 3924250), (10, 1962125), (11, 1783750), (22, 891875), (25, 784850), (50, 392425), (55, 356750), (110, 178375), (125, 156970), (250, 78485), (275, 71350), (550, 35675), (625, 31394), (1250, 15697), (1375, 14270), (1427, 13750), (2750, 7135), (2854, 6875)]