19905255

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{751}}^1$

素因数の和:812

約数の個数: 48

約数和(自身を含む): 37539840

約数和(自身を除く): 17634585

約数列:

[1, 3, 5, 9, 15, 19, 31, 45, 57, 93, 95, 155, 171, 279, 285, 465, 589, 751, 855, 1395, 1767, 2253, 2945, 3755, 5301, 6759, 8835, 11265, 14269, 23281, 26505, 33795, 42807, 69843, 71345, 116405, 128421, 209529, 214035, 349215, 442339, 642105, 1047645, 1327017, 2211695, 3981051, 6635085, 19905255]

約数ペア:

[(1, 19905255), (3, 6635085), (5, 3981051), (9, 2211695), (15, 1327017), (19, 1047645), (31, 642105), (45, 442339), (57, 349215), (93, 214035), (95, 209529), (155, 128421), (171, 116405), (279, 71345), (285, 69843), (465, 42807), (589, 33795), (751, 26505), (855, 23281), (1395, 14269), (1767, 11265), (2253, 8835), (2945, 6759), (3755, 5301)]