28585700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1999}}^1$

素因数の和:2037

約数の個数: 72

約数和(自身を含む): 72912000

約数和(自身を除く): 44326300

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 25, 26, 44, 50, 52, 55, 65, 100, 110, 130, 143, 220, 260, 275, 286, 325, 550, 572, 650, 715, 1100, 1300, 1430, 1999, 2860, 3575, 3998, 7150, 7996, 9995, 14300, 19990, 21989, 25987, 39980, 43978, 49975, 51974, 87956, 99950, 103948, 109945, 129935, 199900, 219890, 259870, 285857, 439780, 519740, 549725, 571714, 649675, 1099450, 1143428, 1299350, 1429285, 2198900, 2598700, 2858570, 5717140, 7146425, 14292850, 28585700]

約数ペア:

[(1, 28585700), (2, 14292850), (4, 7146425), (5, 5717140), (10, 2858570), (11, 2598700), (13, 2198900), (20, 1429285), (22, 1299350), (25, 1143428), (26, 1099450), (44, 649675), (50, 571714), (52, 549725), (55, 519740), (65, 439780), (100, 285857), (110, 259870), (130, 219890), (143, 199900), (220, 129935), (260, 109945), (275, 103948), (286, 99950), (325, 87956), (550, 51974), (572, 49975), (650, 43978), (715, 39980), (1100, 25987), (1300, 21989), (1430, 19990), (1999, 14300), (2860, 9995), (3575, 7996), (3998, 7150)]