21463407

素因数分解:

$3^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{139}}^1$

素因数の和:217

約数の個数: 64

約数和(自身を含む): 39424000

約数和(自身を除く): 17960593

約数列:

[1, 3, 7, 9, 19, 21, 27, 43, 57, 63, 129, 133, 139, 171, 189, 301, 387, 399, 417, 513, 817, 903, 973, 1161, 1197, 1251, 2451, 2641, 2709, 2919, 3591, 3753, 5719, 5977, 7353, 7923, 8127, 8757, 17157, 17931, 18487, 22059, 23769, 26271, 41839, 51471, 53793, 55461, 71307, 113563, 125517, 154413, 161379, 166383, 340689, 376551, 499149, 794941, 1022067, 1129653, 2384823, 3066201, 7154469, 21463407]

約数ペア:

[(1, 21463407), (3, 7154469), (7, 3066201), (9, 2384823), (19, 1129653), (21, 1022067), (27, 794941), (43, 499149), (57, 376551), (63, 340689), (129, 166383), (133, 161379), (139, 154413), (171, 125517), (189, 113563), (301, 71307), (387, 55461), (399, 53793), (417, 51471), (513, 41839), (817, 26271), (903, 23769), (973, 22059), (1161, 18487), (1197, 17931), (1251, 17157), (2451, 8757), (2641, 8127), (2709, 7923), (2919, 7353), (3591, 5977), (3753, 5719)]