20961332

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2\times {\mathrm{41}}^1$

素因数の和:133

約数の個数: 72

約数和(自身を含む): 46710720

約数和(自身を除く): 25749388

約数列:

[1, 2, 4, 7, 14, 19, 28, 31, 38, 41, 62, 76, 82, 124, 133, 164, 217, 266, 287, 434, 532, 574, 589, 779, 868, 961, 1148, 1178, 1271, 1558, 1922, 2356, 2542, 3116, 3844, 4123, 5084, 5453, 6727, 8246, 8897, 10906, 13454, 16492, 17794, 18259, 21812, 24149, 26908, 35588, 36518, 39401, 48298, 73036, 78802, 96596, 127813, 157604, 169043, 255626, 275807, 338086, 511252, 551614, 676172, 748619, 1103228, 1497238, 2994476, 5240333, 10480666, 20961332]

約数ペア:

[(1, 20961332), (2, 10480666), (4, 5240333), (7, 2994476), (14, 1497238), (19, 1103228), (28, 748619), (31, 676172), (38, 551614), (41, 511252), (62, 338086), (76, 275807), (82, 255626), (124, 169043), (133, 157604), (164, 127813), (217, 96596), (266, 78802), (287, 73036), (434, 48298), (532, 39401), (574, 36518), (589, 35588), (779, 26908), (868, 24149), (961, 21812), (1148, 18259), (1178, 17794), (1271, 16492), (1558, 13454), (1922, 10906), (2356, 8897), (2542, 8246), (3116, 6727), (3844, 5453), (4123, 5084)]