20986008

素因数分解:

$2^3\times 3^1\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{421}}^1$

素因数の和:528

約数の個数: 64

約数和(自身を含む): 55096320

約数和(自身を除く): 34110312

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 31, 62, 67, 93, 124, 134, 186, 201, 248, 268, 372, 402, 421, 536, 744, 804, 842, 1263, 1608, 1684, 2077, 2526, 3368, 4154, 5052, 6231, 8308, 10104, 12462, 13051, 16616, 24924, 26102, 28207, 39153, 49848, 52204, 56414, 78306, 84621, 104408, 112828, 156612, 169242, 225656, 313224, 338484, 676968, 874417, 1748834, 2623251, 3497668, 5246502, 6995336, 10493004, 20986008]

約数ペア:

[(1, 20986008), (2, 10493004), (3, 6995336), (4, 5246502), (6, 3497668), (8, 2623251), (12, 1748834), (24, 874417), (31, 676968), (62, 338484), (67, 313224), (93, 225656), (124, 169242), (134, 156612), (186, 112828), (201, 104408), (248, 84621), (268, 78306), (372, 56414), (402, 52204), (421, 49848), (536, 39153), (744, 28207), (804, 26102), (842, 24924), (1263, 16616), (1608, 13051), (1684, 12462), (2077, 10104), (2526, 8308), (3368, 6231), (4154, 5052)]