21255312

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{1481}}^1$

素因数の和:1528

約数の個数: 80

約数和(自身を含む): 61746048

約数和(自身を除く): 40490736

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 23, 24, 26, 39, 46, 48, 52, 69, 78, 92, 104, 138, 156, 184, 208, 276, 299, 312, 368, 552, 598, 624, 897, 1104, 1196, 1481, 1794, 2392, 2962, 3588, 4443, 4784, 5924, 7176, 8886, 11848, 14352, 17772, 19253, 23696, 34063, 35544, 38506, 57759, 68126, 71088, 77012, 102189, 115518, 136252, 154024, 204378, 231036, 272504, 308048, 408756, 442819, 462072, 545008, 817512, 885638, 924144, 1328457, 1635024, 1771276, 2656914, 3542552, 5313828, 7085104, 10627656, 21255312]

約数ペア:

[(1, 21255312), (2, 10627656), (3, 7085104), (4, 5313828), (6, 3542552), (8, 2656914), (12, 1771276), (13, 1635024), (16, 1328457), (23, 924144), (24, 885638), (26, 817512), (39, 545008), (46, 462072), (48, 442819), (52, 408756), (69, 308048), (78, 272504), (92, 231036), (104, 204378), (138, 154024), (156, 136252), (184, 115518), (208, 102189), (276, 77012), (299, 71088), (312, 68126), (368, 57759), (552, 38506), (598, 35544), (624, 34063), (897, 23696), (1104, 19253), (1196, 17772), (1481, 14352), (1794, 11848), (2392, 8886), (2962, 7176), (3588, 5924), (4443, 4784)]