19671975

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{139}}^1$

素因数の和:209

約数の個数: 72

約数和(自身を含む): 38591280

約数和(自身を除く): 18919305

約数列:

[1, 3, 5, 9, 15, 17, 25, 37, 45, 51, 75, 85, 111, 139, 153, 185, 225, 255, 333, 417, 425, 555, 629, 695, 765, 925, 1251, 1275, 1665, 1887, 2085, 2363, 2775, 3145, 3475, 3825, 5143, 5661, 6255, 7089, 8325, 9435, 10425, 11815, 15429, 15725, 21267, 25715, 28305, 31275, 35445, 46287, 47175, 59075, 77145, 87431, 106335, 128575, 141525, 177225, 231435, 262293, 385725, 437155, 531675, 786879, 1157175, 1311465, 2185775, 3934395, 6557325, 19671975]

約数ペア:

[(1, 19671975), (3, 6557325), (5, 3934395), (9, 2185775), (15, 1311465), (17, 1157175), (25, 786879), (37, 531675), (45, 437155), (51, 385725), (75, 262293), (85, 231435), (111, 177225), (139, 141525), (153, 128575), (185, 106335), (225, 87431), (255, 77145), (333, 59075), (417, 47175), (425, 46287), (555, 35445), (629, 31275), (695, 28305), (765, 25715), (925, 21267), (1251, 15725), (1275, 15429), (1665, 11815), (1887, 10425), (2085, 9435), (2363, 8325), (2775, 7089), (3145, 6255), (3475, 5661), (3825, 5143)]