21263291296

素因数分解:

$2^5\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{719911}}^1$

素因数の和:720005

約数の個数: 48

約数和(自身を含む): 45717291648

約数和(自身を除く): 24454000352

約数列:

[1, 2, 4, 8, 13, 16, 26, 32, 52, 71, 104, 142, 208, 284, 416, 568, 923, 1136, 1846, 2272, 3692, 7384, 14768, 29536, 719911, 1439822, 2879644, 5759288, 9358843, 11518576, 18717686, 23037152, 37435372, 51113681, 74870744, 102227362, 149741488, 204454724, 299482976, 408909448, 664477853, 817818896, 1328955706, 1635637792, 2657911412, 5315822824, 10631645648, 21263291296]

約数ペア:

[(1, 21263291296), (2, 10631645648), (4, 5315822824), (8, 2657911412), (13, 1635637792), (16, 1328955706), (26, 817818896), (32, 664477853), (52, 408909448), (71, 299482976), (104, 204454724), (142, 149741488), (208, 102227362), (284, 74870744), (416, 51113681), (568, 37435372), (923, 23037152), (1136, 18717686), (1846, 11518576), (2272, 9358843), (3692, 5759288), (7384, 2879644), (14768, 1439822), (29536, 719911)]