261640496

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{40577}}^1$

素因数の和:40629

約数の個数: 40

約数和(自身を含む): 563547264

約数和(自身を除く): 301906768

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 52, 62, 104, 124, 208, 248, 403, 496, 806, 1612, 3224, 6448, 40577, 81154, 162308, 324616, 527501, 649232, 1055002, 1257887, 2110004, 2515774, 4220008, 5031548, 8440016, 10063096, 16352531, 20126192, 32705062, 65410124, 130820248, 261640496]

約数ペア:

[(1, 261640496), (2, 130820248), (4, 65410124), (8, 32705062), (13, 20126192), (16, 16352531), (26, 10063096), (31, 8440016), (52, 5031548), (62, 4220008), (104, 2515774), (124, 2110004), (208, 1257887), (248, 1055002), (403, 649232), (496, 527501), (806, 324616), (1612, 162308), (3224, 81154), (6448, 40577)]