28725620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1$

素因数の和:861

約数の個数: 96

約数和(自身を含む): 78575616

約数和(自身を除く): 49849996

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 23, 28, 35, 44, 46, 55, 70, 77, 92, 110, 115, 140, 154, 161, 220, 230, 253, 308, 322, 385, 460, 506, 644, 770, 805, 811, 1012, 1265, 1540, 1610, 1622, 1771, 2530, 3220, 3244, 3542, 4055, 5060, 5677, 7084, 8110, 8855, 8921, 11354, 16220, 17710, 17842, 18653, 22708, 28385, 35420, 35684, 37306, 44605, 56770, 62447, 74612, 89210, 93265, 113540, 124894, 130571, 178420, 186530, 205183, 249788, 261142, 312235, 373060, 410366, 522284, 624470, 652855, 820732, 1025915, 1248940, 1305710, 1436281, 2051830, 2611420, 2872562, 4103660, 5745124, 7181405, 14362810, 28725620]

約数ペア:

[(1, 28725620), (2, 14362810), (4, 7181405), (5, 5745124), (7, 4103660), (10, 2872562), (11, 2611420), (14, 2051830), (20, 1436281), (22, 1305710), (23, 1248940), (28, 1025915), (35, 820732), (44, 652855), (46, 624470), (55, 522284), (70, 410366), (77, 373060), (92, 312235), (110, 261142), (115, 249788), (140, 205183), (154, 186530), (161, 178420), (220, 130571), (230, 124894), (253, 113540), (308, 93265), (322, 89210), (385, 74612), (460, 62447), (506, 56770), (644, 44605), (770, 37306), (805, 35684), (811, 35420), (1012, 28385), (1265, 22708), (1540, 18653), (1610, 17842), (1622, 17710), (1771, 16220), (2530, 11354), (3220, 8921), (3244, 8855), (3542, 8110), (4055, 7084), (5060, 5677)]