20120971760

素因数分解:

$2^4\times 5^1\times {\mathrm{353}}^1\times {\mathrm{712499}}^1$

素因数の和:712865

約数の個数: 40

約数和(自身を含む): 46913850000

約数和(自身を除く): 26792878240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 353, 706, 1412, 1765, 2824, 3530, 5648, 7060, 14120, 28240, 712499, 1424998, 2849996, 3562495, 5699992, 7124990, 11399984, 14249980, 28499960, 56999920, 251512147, 503024294, 1006048588, 1257560735, 2012097176, 2515121470, 4024194352, 5030242940, 10060485880, 20120971760]

約数ペア:

[(1, 20120971760), (2, 10060485880), (4, 5030242940), (5, 4024194352), (8, 2515121470), (10, 2012097176), (16, 1257560735), (20, 1006048588), (40, 503024294), (80, 251512147), (353, 56999920), (706, 28499960), (1412, 14249980), (1765, 11399984), (2824, 7124990), (3530, 5699992), (5648, 3562495), (7060, 2849996), (14120, 1424998), (28240, 712499)]