81775940

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{277}}^1\times {\mathrm{509}}^1$

素因数の和:824

約数の個数: 48

約数和(自身を含む): 178642800

約数和(自身を除く): 96866860

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 277, 290, 509, 554, 580, 1018, 1108, 1385, 2036, 2545, 2770, 5090, 5540, 8033, 10180, 14761, 16066, 29522, 32132, 40165, 59044, 73805, 80330, 140993, 147610, 160660, 281986, 295220, 563972, 704965, 1409930, 2819860, 4088797, 8177594, 16355188, 20443985, 40887970, 81775940]

約数ペア:

[(1, 81775940), (2, 40887970), (4, 20443985), (5, 16355188), (10, 8177594), (20, 4088797), (29, 2819860), (58, 1409930), (116, 704965), (145, 563972), (277, 295220), (290, 281986), (509, 160660), (554, 147610), (580, 140993), (1018, 80330), (1108, 73805), (1385, 59044), (2036, 40165), (2545, 32132), (2770, 29522), (5090, 16066), (5540, 14761), (8033, 10180)]