27780525

素因数分解:

$3^2\times 5^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{71}}^1$

素因数の和:171

約数の個数: 72

約数和(自身を含む): 52925184

約数和(自身を除く): 25144659

約数列:

[1, 3, 5, 9, 15, 25, 37, 45, 47, 71, 75, 111, 141, 185, 213, 225, 235, 333, 355, 423, 555, 639, 705, 925, 1065, 1175, 1665, 1739, 1775, 2115, 2627, 2775, 3195, 3337, 3525, 5217, 5325, 7881, 8325, 8695, 10011, 10575, 13135, 15651, 15975, 16685, 23643, 26085, 30033, 39405, 43475, 50055, 65675, 78255, 83425, 118215, 123469, 130425, 150165, 197025, 250275, 370407, 391275, 591075, 617345, 750825, 1111221, 1852035, 3086725, 5556105, 9260175, 27780525]

約数ペア:

[(1, 27780525), (3, 9260175), (5, 5556105), (9, 3086725), (15, 1852035), (25, 1111221), (37, 750825), (45, 617345), (47, 591075), (71, 391275), (75, 370407), (111, 250275), (141, 197025), (185, 150165), (213, 130425), (225, 123469), (235, 118215), (333, 83425), (355, 78255), (423, 65675), (555, 50055), (639, 43475), (705, 39405), (925, 30033), (1065, 26085), (1175, 23643), (1665, 16685), (1739, 15975), (1775, 15651), (2115, 13135), (2627, 10575), (2775, 10011), (3195, 8695), (3337, 8325), (3525, 7881), (5217, 5325)]