21071475

素因数分解:

$3^3\times 5^2\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{53}}^1$

素因数の和:122

約数の個数: 96

約数和(自身を含む): 42854400

約数和(自身を除く): 21782925

約数列:

[1, 3, 5, 9, 15, 19, 25, 27, 31, 45, 53, 57, 75, 93, 95, 135, 155, 159, 171, 225, 265, 279, 285, 465, 475, 477, 513, 589, 675, 775, 795, 837, 855, 1007, 1325, 1395, 1425, 1431, 1643, 1767, 2325, 2385, 2565, 2945, 3021, 3975, 4185, 4275, 4929, 5035, 5301, 6975, 7155, 8215, 8835, 9063, 11925, 12825, 14725, 14787, 15105, 15903, 20925, 24645, 25175, 26505, 27189, 31217, 35775, 41075, 44175, 44361, 45315, 73935, 75525, 79515, 93651, 123225, 132525, 135945, 156085, 221805, 226575, 280953, 369675, 397575, 468255, 679725, 780425, 842859, 1109025, 1404765, 2341275, 4214295, 7023825, 21071475]

約数ペア:

[(1, 21071475), (3, 7023825), (5, 4214295), (9, 2341275), (15, 1404765), (19, 1109025), (25, 842859), (27, 780425), (31, 679725), (45, 468255), (53, 397575), (57, 369675), (75, 280953), (93, 226575), (95, 221805), (135, 156085), (155, 135945), (159, 132525), (171, 123225), (225, 93651), (265, 79515), (279, 75525), (285, 73935), (465, 45315), (475, 44361), (477, 44175), (513, 41075), (589, 35775), (675, 31217), (775, 27189), (795, 26505), (837, 25175), (855, 24645), (1007, 20925), (1325, 15903), (1395, 15105), (1425, 14787), (1431, 14725), (1643, 12825), (1767, 11925), (2325, 9063), (2385, 8835), (2565, 8215), (2945, 7155), (3021, 6975), (3975, 5301), (4185, 5035), (4275, 4929)]