21623368

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{353}}^1$

素因数の和:422

約数の個数: 64

約数和(自身を含む): 47577600

約数和(自身を除く): 25954232

約数列:

[1, 2, 4, 8, 13, 19, 26, 31, 38, 52, 62, 76, 104, 124, 152, 247, 248, 353, 403, 494, 589, 706, 806, 988, 1178, 1412, 1612, 1976, 2356, 2824, 3224, 4589, 4712, 6707, 7657, 9178, 10943, 13414, 15314, 18356, 21886, 26828, 30628, 36712, 43772, 53656, 61256, 87191, 87544, 142259, 174382, 207917, 284518, 348764, 415834, 569036, 697528, 831668, 1138072, 1663336, 2702921, 5405842, 10811684, 21623368]

約数ペア:

[(1, 21623368), (2, 10811684), (4, 5405842), (8, 2702921), (13, 1663336), (19, 1138072), (26, 831668), (31, 697528), (38, 569036), (52, 415834), (62, 348764), (76, 284518), (104, 207917), (124, 174382), (152, 142259), (247, 87544), (248, 87191), (353, 61256), (403, 53656), (494, 43772), (589, 36712), (706, 30628), (806, 26828), (988, 21886), (1178, 18356), (1412, 15314), (1612, 13414), (1976, 10943), (2356, 9178), (2824, 7657), (3224, 6707), (4589, 4712)]