21328578

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{283}}^1$

素因数の和:423

約数の個数: 48

約数和(自身を含む): 47848320

約数和(自身を除く): 26519742

約数列:

[1, 2, 3, 6, 9, 18, 53, 79, 106, 158, 159, 237, 283, 318, 474, 477, 566, 711, 849, 954, 1422, 1698, 2547, 4187, 5094, 8374, 12561, 14999, 22357, 25122, 29998, 37683, 44714, 44997, 67071, 75366, 89994, 134142, 134991, 201213, 269982, 402426, 1184921, 2369842, 3554763, 7109526, 10664289, 21328578]

約数ペア:

[(1, 21328578), (2, 10664289), (3, 7109526), (6, 3554763), (9, 2369842), (18, 1184921), (53, 402426), (79, 269982), (106, 201213), (158, 134991), (159, 134142), (237, 89994), (283, 75366), (318, 67071), (474, 44997), (477, 44714), (566, 37683), (711, 29998), (849, 25122), (954, 22357), (1422, 14999), (1698, 12561), (2547, 8374), (4187, 5094)]