21206055

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{6397}}^1$

素因数の和:6435

約数の個数: 32

約数和(自身を含む): 38695104

約数和(自身を除く): 17489049

約数列:

[1, 3, 5, 13, 15, 17, 39, 51, 65, 85, 195, 221, 255, 663, 1105, 3315, 6397, 19191, 31985, 83161, 95955, 108749, 249483, 326247, 415805, 543745, 1247415, 1413737, 1631235, 4241211, 7068685, 21206055]

約数ペア:

[(1, 21206055), (3, 7068685), (5, 4241211), (13, 1631235), (15, 1413737), (17, 1247415), (39, 543745), (51, 415805), (65, 326247), (85, 249483), (195, 108749), (221, 95955), (255, 83161), (663, 31985), (1105, 19191), (3315, 6397)]