21769136

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{101}}^1\times {\mathrm{709}}^1$

素因数の和:837

約数の個数: 40

約数和(自身を含む): 44900400

約数和(自身を除く): 23131264

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 101, 152, 202, 304, 404, 709, 808, 1418, 1616, 1919, 2836, 3838, 5672, 7676, 11344, 13471, 15352, 26942, 30704, 53884, 71609, 107768, 143218, 215536, 286436, 572872, 1145744, 1360571, 2721142, 5442284, 10884568, 21769136]

約数ペア:

[(1, 21769136), (2, 10884568), (4, 5442284), (8, 2721142), (16, 1360571), (19, 1145744), (38, 572872), (76, 286436), (101, 215536), (152, 143218), (202, 107768), (304, 71609), (404, 53884), (709, 30704), (808, 26942), (1418, 15352), (1616, 13471), (1919, 11344), (2836, 7676), (3838, 5672)]