21880040

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{6011}}^1$

素因数の和:6042

約数の個数: 64

約数和(自身を含む): 60600960

約数和(自身を除く): 38720920

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 52, 56, 65, 70, 91, 104, 130, 140, 182, 260, 280, 364, 455, 520, 728, 910, 1820, 3640, 6011, 12022, 24044, 30055, 42077, 48088, 60110, 78143, 84154, 120220, 156286, 168308, 210385, 240440, 312572, 336616, 390715, 420770, 547001, 625144, 781430, 841540, 1094002, 1562860, 1683080, 2188004, 2735005, 3125720, 4376008, 5470010, 10940020, 21880040]

約数ペア:

[(1, 21880040), (2, 10940020), (4, 5470010), (5, 4376008), (7, 3125720), (8, 2735005), (10, 2188004), (13, 1683080), (14, 1562860), (20, 1094002), (26, 841540), (28, 781430), (35, 625144), (40, 547001), (52, 420770), (56, 390715), (65, 336616), (70, 312572), (91, 240440), (104, 210385), (130, 168308), (140, 156286), (182, 120220), (260, 84154), (280, 78143), (364, 60110), (455, 48088), (520, 42077), (728, 30055), (910, 24044), (1820, 12022), (3640, 6011)]