21724605

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:200

約数の個数: 80

約数和(自身を含む): 45534720

約数和(自身を除く): 23810115

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 79, 81, 97, 105, 135, 189, 237, 291, 315, 395, 405, 485, 553, 567, 679, 711, 873, 945, 1185, 1455, 1659, 2037, 2133, 2619, 2765, 2835, 3395, 3555, 4365, 4977, 6111, 6399, 7663, 7857, 8295, 10185, 10665, 13095, 14931, 18333, 22989, 24885, 30555, 31995, 38315, 39285, 44793, 53641, 54999, 68967, 74655, 91665, 114945, 160923, 206901, 223965, 268205, 274995, 344835, 482769, 620703, 804615, 1034505, 1448307, 2413845, 3103515, 4344921, 7241535, 21724605]

約数ペア:

[(1, 21724605), (3, 7241535), (5, 4344921), (7, 3103515), (9, 2413845), (15, 1448307), (21, 1034505), (27, 804615), (35, 620703), (45, 482769), (63, 344835), (79, 274995), (81, 268205), (97, 223965), (105, 206901), (135, 160923), (189, 114945), (237, 91665), (291, 74655), (315, 68967), (395, 54999), (405, 53641), (485, 44793), (553, 39285), (567, 38315), (679, 31995), (711, 30555), (873, 24885), (945, 22989), (1185, 18333), (1455, 14931), (1659, 13095), (2037, 10665), (2133, 10185), (2619, 8295), (2765, 7857), (2835, 7663), (3395, 6399), (3555, 6111), (4365, 4977)]