20501472920

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{195401}}^1$

素因数の和:195516

約数の個数: 64

約数和(自身を含む): 47975099040

約数和(自身を除く): 27473626120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 61, 86, 122, 172, 215, 244, 305, 344, 430, 488, 610, 860, 1220, 1720, 2440, 2623, 5246, 10492, 13115, 20984, 26230, 52460, 104920, 195401, 390802, 781604, 977005, 1563208, 1954010, 3908020, 7816040, 8402243, 11919461, 16804486, 23838922, 33608972, 42011215, 47677844, 59597305, 67217944, 84022430, 95355688, 119194610, 168044860, 238389220, 336089720, 476778440, 512536823, 1025073646, 2050147292, 2562684115, 4100294584, 5125368230, 10250736460, 20501472920]

約数ペア:

[(1, 20501472920), (2, 10250736460), (4, 5125368230), (5, 4100294584), (8, 2562684115), (10, 2050147292), (20, 1025073646), (40, 512536823), (43, 476778440), (61, 336089720), (86, 238389220), (122, 168044860), (172, 119194610), (215, 95355688), (244, 84022430), (305, 67217944), (344, 59597305), (430, 47677844), (488, 42011215), (610, 33608972), (860, 23838922), (1220, 16804486), (1720, 11919461), (2440, 8402243), (2623, 7816040), (5246, 3908020), (10492, 1954010), (13115, 1563208), (20984, 977005), (26230, 781604), (52460, 390802), (104920, 195401)]