28451920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^2$

素因数の和:137

約数の個数: 120

約数和(自身を含む): 80601984

約数和(自身を除く): 52150064

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 47, 56, 70, 80, 92, 94, 112, 115, 140, 161, 184, 188, 230, 235, 280, 322, 329, 368, 376, 460, 470, 560, 644, 658, 752, 805, 920, 940, 1081, 1288, 1316, 1610, 1645, 1840, 1880, 2162, 2209, 2576, 2632, 3220, 3290, 3760, 4324, 4418, 5264, 5405, 6440, 6580, 7567, 8648, 8836, 10810, 11045, 12880, 13160, 15134, 15463, 17296, 17672, 21620, 22090, 26320, 30268, 30926, 35344, 37835, 43240, 44180, 50807, 60536, 61852, 75670, 77315, 86480, 88360, 101614, 121072, 123704, 151340, 154630, 176720, 203228, 247408, 254035, 302680, 309260, 355649, 406456, 508070, 605360, 618520, 711298, 812912, 1016140, 1237040, 1422596, 1778245, 2032280, 2845192, 3556490, 4064560, 5690384, 7112980, 14225960, 28451920]

約数ペア:

[(1, 28451920), (2, 14225960), (4, 7112980), (5, 5690384), (7, 4064560), (8, 3556490), (10, 2845192), (14, 2032280), (16, 1778245), (20, 1422596), (23, 1237040), (28, 1016140), (35, 812912), (40, 711298), (46, 618520), (47, 605360), (56, 508070), (70, 406456), (80, 355649), (92, 309260), (94, 302680), (112, 254035), (115, 247408), (140, 203228), (161, 176720), (184, 154630), (188, 151340), (230, 123704), (235, 121072), (280, 101614), (322, 88360), (329, 86480), (368, 77315), (376, 75670), (460, 61852), (470, 60536), (560, 50807), (644, 44180), (658, 43240), (752, 37835), (805, 35344), (920, 30926), (940, 30268), (1081, 26320), (1288, 22090), (1316, 21620), (1610, 17672), (1645, 17296), (1840, 15463), (1880, 15134), (2162, 13160), (2209, 12880), (2576, 11045), (2632, 10810), (3220, 8836), (3290, 8648), (3760, 7567), (4324, 6580), (4418, 6440), (5264, 5405)]