19742355

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{131}}^1\times {\mathrm{197}}^1$

素因数の和:356

約数の個数: 48

約数和(自身を含む): 36694944

約数和(自身を除く): 16952589

約数列:

[1, 3, 5, 9, 15, 17, 45, 51, 85, 131, 153, 197, 255, 393, 591, 655, 765, 985, 1179, 1773, 1965, 2227, 2955, 3349, 5895, 6681, 8865, 10047, 11135, 16745, 20043, 25807, 30141, 33405, 50235, 77421, 100215, 129035, 150705, 232263, 387105, 438719, 1161315, 1316157, 2193595, 3948471, 6580785, 19742355]

約数ペア:

[(1, 19742355), (3, 6580785), (5, 3948471), (9, 2193595), (15, 1316157), (17, 1161315), (45, 438719), (51, 387105), (85, 232263), (131, 150705), (153, 129035), (197, 100215), (255, 77421), (393, 50235), (591, 33405), (655, 30141), (765, 25807), (985, 20043), (1179, 16745), (1773, 11135), (1965, 10047), (2227, 8865), (2955, 6681), (3349, 5895)]