21386666

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:159

約数の個数: 64

約数和(自身を含む): 41368320

約数和(自身を除く): 19981654

約数列:

[1, 2, 7, 14, 19, 37, 38, 41, 53, 74, 82, 106, 133, 259, 266, 287, 371, 518, 574, 703, 742, 779, 1007, 1406, 1517, 1558, 1961, 2014, 2173, 3034, 3922, 4346, 4921, 5453, 7049, 9842, 10619, 10906, 13727, 14098, 15211, 21238, 27454, 28823, 30422, 37259, 41287, 57646, 74518, 80401, 82574, 160802, 201761, 260813, 289009, 403522, 521626, 562807, 578018, 1125614, 1527619, 3055238, 10693333, 21386666]

約数ペア:

[(1, 21386666), (2, 10693333), (7, 3055238), (14, 1527619), (19, 1125614), (37, 578018), (38, 562807), (41, 521626), (53, 403522), (74, 289009), (82, 260813), (106, 201761), (133, 160802), (259, 82574), (266, 80401), (287, 74518), (371, 57646), (518, 41287), (574, 37259), (703, 30422), (742, 28823), (779, 27454), (1007, 21238), (1406, 15211), (1517, 14098), (1558, 13727), (1961, 10906), (2014, 10619), (2173, 9842), (3034, 7049), (3922, 5453), (4346, 4921)]