20554425

素因数分解:

$3^3\times 5^2\times {\mathrm{37}}^1\times {\mathrm{823}}^1$

素因数の和:879

約数の個数: 48

約数和(自身を含む): 38826880

約数和(自身を除く): 18272455

約数列:

[1, 3, 5, 9, 15, 25, 27, 37, 45, 75, 111, 135, 185, 225, 333, 555, 675, 823, 925, 999, 1665, 2469, 2775, 4115, 4995, 7407, 8325, 12345, 20575, 22221, 24975, 30451, 37035, 61725, 91353, 111105, 152255, 185175, 274059, 456765, 555525, 761275, 822177, 1370295, 2283825, 4110885, 6851475, 20554425]

約数ペア:

[(1, 20554425), (3, 6851475), (5, 4110885), (9, 2283825), (15, 1370295), (25, 822177), (27, 761275), (37, 555525), (45, 456765), (75, 274059), (111, 185175), (135, 152255), (185, 111105), (225, 91353), (333, 61725), (555, 37035), (675, 30451), (823, 24975), (925, 22221), (999, 20575), (1665, 12345), (2469, 8325), (2775, 7407), (4115, 4995)]