21281808

素因数分解:

$2^4\times 3^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{521}}^1$

素因数の和:592

約数の個数: 80

約数和(自身を含む): 59031936

約数和(自身を除く): 37750128

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 23, 24, 37, 46, 48, 69, 74, 92, 111, 138, 148, 184, 222, 276, 296, 368, 444, 521, 552, 592, 851, 888, 1042, 1104, 1563, 1702, 1776, 2084, 2553, 3126, 3404, 4168, 5106, 6252, 6808, 8336, 10212, 11983, 12504, 13616, 19277, 20424, 23966, 25008, 35949, 38554, 40848, 47932, 57831, 71898, 77108, 95864, 115662, 143796, 154216, 191728, 231324, 287592, 308432, 443371, 462648, 575184, 886742, 925296, 1330113, 1773484, 2660226, 3546968, 5320452, 7093936, 10640904, 21281808]

約数ペア:

[(1, 21281808), (2, 10640904), (3, 7093936), (4, 5320452), (6, 3546968), (8, 2660226), (12, 1773484), (16, 1330113), (23, 925296), (24, 886742), (37, 575184), (46, 462648), (48, 443371), (69, 308432), (74, 287592), (92, 231324), (111, 191728), (138, 154216), (148, 143796), (184, 115662), (222, 95864), (276, 77108), (296, 71898), (368, 57831), (444, 47932), (521, 40848), (552, 38554), (592, 35949), (851, 25008), (888, 23966), (1042, 20424), (1104, 19277), (1563, 13616), (1702, 12504), (1776, 11983), (2084, 10212), (2553, 8336), (3126, 6808), (3404, 6252), (4168, 5106)]