398745837

素因数分解:

$3^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:263

約数の個数: 96

約数和(自身を含む): 726302720

約数和(自身を除く): 327556883

約数列:

[1, 3, 7, 9, 19, 21, 43, 57, 61, 63, 127, 129, 133, 171, 183, 301, 381, 387, 399, 427, 549, 817, 889, 903, 1143, 1159, 1197, 1281, 2413, 2451, 2623, 2667, 2709, 3477, 3843, 5461, 5719, 7239, 7353, 7747, 7869, 8001, 8113, 10431, 16383, 16891, 17157, 18361, 21717, 23241, 23607, 24339, 38227, 49149, 49837, 50673, 51471, 54229, 55083, 69723, 73017, 103759, 114681, 147193, 149511, 152019, 162687, 165249, 311277, 333121, 344043, 348859, 441579, 448533, 488061, 726313, 933831, 999363, 1030351, 1046577, 1324737, 2178939, 2331847, 2998089, 3091053, 3139731, 6329299, 6536817, 6995541, 9273159, 18987897, 20986623, 44305093, 56963691, 132915279, 398745837]

約数ペア:

[(1, 398745837), (3, 132915279), (7, 56963691), (9, 44305093), (19, 20986623), (21, 18987897), (43, 9273159), (57, 6995541), (61, 6536817), (63, 6329299), (127, 3139731), (129, 3091053), (133, 2998089), (171, 2331847), (183, 2178939), (301, 1324737), (381, 1046577), (387, 1030351), (399, 999363), (427, 933831), (549, 726313), (817, 488061), (889, 448533), (903, 441579), (1143, 348859), (1159, 344043), (1197, 333121), (1281, 311277), (2413, 165249), (2451, 162687), (2623, 152019), (2667, 149511), (2709, 147193), (3477, 114681), (3843, 103759), (5461, 73017), (5719, 69723), (7239, 55083), (7353, 54229), (7747, 51471), (7869, 50673), (8001, 49837), (8113, 49149), (10431, 38227), (16383, 24339), (16891, 23607), (17157, 23241), (18361, 21717)]