21088585

素因数分解:

$5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^2\times {\mathrm{67}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 32489856

約数和(自身を除く): 11401271

約数列:

[1, 5, 7, 17, 23, 35, 67, 85, 115, 119, 161, 335, 391, 469, 529, 595, 805, 1139, 1541, 1955, 2345, 2645, 2737, 3703, 5695, 7705, 7973, 8993, 10787, 13685, 18515, 26197, 35443, 39865, 44965, 53935, 62951, 130985, 177215, 183379, 248101, 314755, 602531, 916895, 1240505, 3012655, 4217717, 21088585]

約数ペア:

[(1, 21088585), (5, 4217717), (7, 3012655), (17, 1240505), (23, 916895), (35, 602531), (67, 314755), (85, 248101), (115, 183379), (119, 177215), (161, 130985), (335, 62951), (391, 53935), (469, 44965), (529, 39865), (595, 35443), (805, 26197), (1139, 18515), (1541, 13685), (1955, 10787), (2345, 8993), (2645, 7973), (2737, 7705), (3703, 5695)]