21264420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{811}}^1$

素因数の和:865

約数の個数: 96

約数和(自身を含む): 65479680

約数和(自身を除く): 44215260

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 23, 30, 38, 46, 57, 60, 69, 76, 92, 95, 114, 115, 138, 190, 228, 230, 276, 285, 345, 380, 437, 460, 570, 690, 811, 874, 1140, 1311, 1380, 1622, 1748, 2185, 2433, 2622, 3244, 4055, 4370, 4866, 5244, 6555, 8110, 8740, 9732, 12165, 13110, 15409, 16220, 18653, 24330, 26220, 30818, 37306, 46227, 48660, 55959, 61636, 74612, 77045, 92454, 93265, 111918, 154090, 184908, 186530, 223836, 231135, 279795, 308180, 354407, 373060, 462270, 559590, 708814, 924540, 1063221, 1119180, 1417628, 1772035, 2126442, 3544070, 4252884, 5316105, 7088140, 10632210, 21264420]

約数ペア:

[(1, 21264420), (2, 10632210), (3, 7088140), (4, 5316105), (5, 4252884), (6, 3544070), (10, 2126442), (12, 1772035), (15, 1417628), (19, 1119180), (20, 1063221), (23, 924540), (30, 708814), (38, 559590), (46, 462270), (57, 373060), (60, 354407), (69, 308180), (76, 279795), (92, 231135), (95, 223836), (114, 186530), (115, 184908), (138, 154090), (190, 111918), (228, 93265), (230, 92454), (276, 77045), (285, 74612), (345, 61636), (380, 55959), (437, 48660), (460, 46227), (570, 37306), (690, 30818), (811, 26220), (874, 24330), (1140, 18653), (1311, 16220), (1380, 15409), (1622, 13110), (1748, 12165), (2185, 9732), (2433, 8740), (2622, 8110), (3244, 6555), (4055, 5244), (4370, 4866)]