20217508520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{553601}}^1$

素因数の和:553706

約数の個数: 64

約数和(自身を含む): 50222773440

約数和(自身を除く): 30005264920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 83, 88, 110, 166, 220, 332, 415, 440, 664, 830, 913, 1660, 1826, 3320, 3652, 4565, 7304, 9130, 18260, 36520, 553601, 1107202, 2214404, 2768005, 4428808, 5536010, 6089611, 11072020, 12179222, 22144040, 24358444, 30448055, 45948883, 48716888, 60896110, 91897766, 121792220, 183795532, 229744415, 243584440, 367591064, 459488830, 505437713, 918977660, 1010875426, 1837955320, 2021750852, 2527188565, 4043501704, 5054377130, 10108754260, 20217508520]

約数ペア:

[(1, 20217508520), (2, 10108754260), (4, 5054377130), (5, 4043501704), (8, 2527188565), (10, 2021750852), (11, 1837955320), (20, 1010875426), (22, 918977660), (40, 505437713), (44, 459488830), (55, 367591064), (83, 243584440), (88, 229744415), (110, 183795532), (166, 121792220), (220, 91897766), (332, 60896110), (415, 48716888), (440, 45948883), (664, 30448055), (830, 24358444), (913, 22144040), (1660, 12179222), (1826, 11072020), (3320, 6089611), (3652, 5536010), (4565, 4428808), (7304, 2768005), (9130, 2214404), (18260, 1107202), (36520, 553601)]