18951175

素因数分解:

$5^2\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{61}}^1$

素因数の和:148

約数の個数: 36

約数和(自身を含む): 25962376

約数和(自身を除く): 7011201

約数列:

[1, 5, 17, 25, 43, 61, 85, 215, 289, 305, 425, 731, 1037, 1075, 1445, 1525, 2623, 3655, 5185, 7225, 12427, 13115, 17629, 18275, 25925, 44591, 62135, 65575, 88145, 222955, 310675, 440725, 758047, 1114775, 3790235, 18951175]

約数ペア:

[(1, 18951175), (5, 3790235), (17, 1114775), (25, 758047), (43, 440725), (61, 310675), (85, 222955), (215, 88145), (289, 65575), (305, 62135), (425, 44591), (731, 25925), (1037, 18275), (1075, 17629), (1445, 13115), (1525, 12427), (2623, 7225), (3655, 5185)]