21706972

素因数分解:

$2^2\times 7^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{179}}^1$

素因数の和:322

約数の個数: 48

約数和(自身を含む): 44997120

約数和(自身を除く): 23290148

約数列:

[1, 2, 4, 7, 14, 28, 61, 71, 122, 142, 179, 244, 284, 358, 427, 497, 716, 854, 994, 1253, 1708, 1988, 2506, 4331, 5012, 8662, 10919, 12709, 17324, 21838, 25418, 30317, 43676, 50836, 60634, 76433, 88963, 121268, 152866, 177926, 305732, 355852, 775249, 1550498, 3100996, 5426743, 10853486, 21706972]

約数ペア:

[(1, 21706972), (2, 10853486), (4, 5426743), (7, 3100996), (14, 1550498), (28, 775249), (61, 355852), (71, 305732), (122, 177926), (142, 152866), (179, 121268), (244, 88963), (284, 76433), (358, 60634), (427, 50836), (497, 43676), (716, 30317), (854, 25418), (994, 21838), (1253, 17324), (1708, 12709), (1988, 10919), (2506, 8662), (4331, 5012)]