20498520

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1061}}^1$

素因数の和:1105

約数の個数: 128

約数和(自身を含む): 73405440

約数和(自身を除く): 52906920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 23, 24, 28, 30, 35, 40, 42, 46, 56, 60, 69, 70, 84, 92, 105, 115, 120, 138, 140, 161, 168, 184, 210, 230, 276, 280, 322, 345, 420, 460, 483, 552, 644, 690, 805, 840, 920, 966, 1061, 1288, 1380, 1610, 1932, 2122, 2415, 2760, 3183, 3220, 3864, 4244, 4830, 5305, 6366, 6440, 7427, 8488, 9660, 10610, 12732, 14854, 15915, 19320, 21220, 22281, 24403, 25464, 29708, 31830, 37135, 42440, 44562, 48806, 59416, 63660, 73209, 74270, 89124, 97612, 111405, 122015, 127320, 146418, 148540, 170821, 178248, 195224, 222810, 244030, 292836, 297080, 341642, 366045, 445620, 488060, 512463, 585672, 683284, 732090, 854105, 891240, 976120, 1024926, 1366568, 1464180, 1708210, 2049852, 2562315, 2928360, 3416420, 4099704, 5124630, 6832840, 10249260, 20498520]

約数ペア:

[(1, 20498520), (2, 10249260), (3, 6832840), (4, 5124630), (5, 4099704), (6, 3416420), (7, 2928360), (8, 2562315), (10, 2049852), (12, 1708210), (14, 1464180), (15, 1366568), (20, 1024926), (21, 976120), (23, 891240), (24, 854105), (28, 732090), (30, 683284), (35, 585672), (40, 512463), (42, 488060), (46, 445620), (56, 366045), (60, 341642), (69, 297080), (70, 292836), (84, 244030), (92, 222810), (105, 195224), (115, 178248), (120, 170821), (138, 148540), (140, 146418), (161, 127320), (168, 122015), (184, 111405), (210, 97612), (230, 89124), (276, 74270), (280, 73209), (322, 63660), (345, 59416), (420, 48806), (460, 44562), (483, 42440), (552, 37135), (644, 31830), (690, 29708), (805, 25464), (840, 24403), (920, 22281), (966, 21220), (1061, 19320), (1288, 15915), (1380, 14854), (1610, 12732), (1932, 10610), (2122, 9660), (2415, 8488), (2760, 7427), (3183, 6440), (3220, 6366), (3864, 5305), (4244, 4830)]