19786455

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{227}}^1$

素因数の和:400

約数の個数: 48

約数和(自身を含む): 37346400

約数和(自身を除く): 17559945

約数列:

[1, 3, 5, 9, 13, 15, 39, 45, 65, 117, 149, 195, 227, 447, 585, 681, 745, 1135, 1341, 1937, 2043, 2235, 2951, 3405, 5811, 6705, 8853, 9685, 10215, 14755, 17433, 26559, 29055, 33823, 44265, 87165, 101469, 132795, 169115, 304407, 439699, 507345, 1319097, 1522035, 2198495, 3957291, 6595485, 19786455]

約数ペア:

[(1, 19786455), (3, 6595485), (5, 3957291), (9, 2198495), (13, 1522035), (15, 1319097), (39, 507345), (45, 439699), (65, 304407), (117, 169115), (149, 132795), (195, 101469), (227, 87165), (447, 44265), (585, 33823), (681, 29055), (745, 26559), (1135, 17433), (1341, 14755), (1937, 10215), (2043, 9685), (2235, 8853), (2951, 6705), (3405, 5811)]