19878525

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{5197}}^1$

素因数の和:5230

約数の個数: 36

約数和(自身を含む): 37706292

約数和(自身を除く): 17827767

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 153, 225, 255, 425, 765, 1275, 3825, 5197, 15591, 25985, 46773, 77955, 88349, 129925, 233865, 265047, 389775, 441745, 795141, 1169325, 1325235, 2208725, 3975705, 6626175, 19878525]

約数ペア:

[(1, 19878525), (3, 6626175), (5, 3975705), (9, 2208725), (15, 1325235), (17, 1169325), (25, 795141), (45, 441745), (51, 389775), (75, 265047), (85, 233865), (153, 129925), (225, 88349), (255, 77955), (425, 46773), (765, 25985), (1275, 15591), (3825, 5197)]