19805695

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{79}}^1$

素因数の和:152

約数の個数: 64

約数和(自身を含む): 32256000

約数和(自身を除く): 12450305

約数列:

[1, 5, 7, 13, 19, 29, 35, 65, 79, 91, 95, 133, 145, 203, 247, 377, 395, 455, 551, 553, 665, 1015, 1027, 1235, 1501, 1729, 1885, 2291, 2639, 2755, 2765, 3857, 5135, 7163, 7189, 7505, 8645, 10507, 11455, 13195, 16037, 19285, 19513, 29783, 35815, 35945, 43529, 50141, 52535, 80185, 97565, 136591, 148915, 208481, 217645, 250705, 304703, 565877, 682955, 1042405, 1523515, 2829385, 3961139, 19805695]

約数ペア:

[(1, 19805695), (5, 3961139), (7, 2829385), (13, 1523515), (19, 1042405), (29, 682955), (35, 565877), (65, 304703), (79, 250705), (91, 217645), (95, 208481), (133, 148915), (145, 136591), (203, 97565), (247, 80185), (377, 52535), (395, 50141), (455, 43529), (551, 35945), (553, 35815), (665, 29783), (1015, 19513), (1027, 19285), (1235, 16037), (1501, 13195), (1729, 11455), (1885, 10507), (2291, 8645), (2639, 7505), (2755, 7189), (2765, 7163), (3857, 5135)]