26193880

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{97}}^1\times {\mathrm{157}}^1$

素因数の和:308

約数の個数: 64

約数和(自身を含む): 61316640

約数和(自身を除く): 35122760

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 97, 157, 172, 194, 215, 314, 344, 388, 430, 485, 628, 776, 785, 860, 970, 1256, 1570, 1720, 1940, 3140, 3880, 4171, 6280, 6751, 8342, 13502, 15229, 16684, 20855, 27004, 30458, 33368, 33755, 41710, 54008, 60916, 67510, 76145, 83420, 121832, 135020, 152290, 166840, 270040, 304580, 609160, 654847, 1309694, 2619388, 3274235, 5238776, 6548470, 13096940, 26193880]

約数ペア:

[(1, 26193880), (2, 13096940), (4, 6548470), (5, 5238776), (8, 3274235), (10, 2619388), (20, 1309694), (40, 654847), (43, 609160), (86, 304580), (97, 270040), (157, 166840), (172, 152290), (194, 135020), (215, 121832), (314, 83420), (344, 76145), (388, 67510), (430, 60916), (485, 54008), (628, 41710), (776, 33755), (785, 33368), (860, 30458), (970, 27004), (1256, 20855), (1570, 16684), (1720, 15229), (1940, 13502), (3140, 8342), (3880, 6751), (4171, 6280)]