20089840

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13217}}^1$

素因数の和:13249

約数の個数: 40

約数和(自身を含む): 49170960

約数和(自身を除く): 29081120

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13217, 26434, 52868, 66085, 105736, 132170, 211472, 251123, 264340, 502246, 528680, 1004492, 1057360, 1255615, 2008984, 2511230, 4017968, 5022460, 10044920, 20089840]

約数ペア:

[(1, 20089840), (2, 10044920), (4, 5022460), (5, 4017968), (8, 2511230), (10, 2008984), (16, 1255615), (19, 1057360), (20, 1004492), (38, 528680), (40, 502246), (76, 264340), (80, 251123), (95, 211472), (152, 132170), (190, 105736), (304, 66085), (380, 52868), (760, 26434), (1520, 13217)]