20125481720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1\times {\mathrm{208511}}^1$

素因数の和:208668

約数の個数: 64

約数和(自身を含む): 48041164800

約数和(自身を除く): 27915683080

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 127, 152, 190, 254, 380, 508, 635, 760, 1016, 1270, 2413, 2540, 4826, 5080, 9652, 12065, 19304, 24130, 48260, 96520, 208511, 417022, 834044, 1042555, 1668088, 2085110, 3961709, 4170220, 7923418, 8340440, 15846836, 19808545, 26480897, 31693672, 39617090, 52961794, 79234180, 105923588, 132404485, 158468360, 211847176, 264808970, 503137043, 529617940, 1006274086, 1059235880, 2012548172, 2515685215, 4025096344, 5031370430, 10062740860, 20125481720]

約数ペア:

[(1, 20125481720), (2, 10062740860), (4, 5031370430), (5, 4025096344), (8, 2515685215), (10, 2012548172), (19, 1059235880), (20, 1006274086), (38, 529617940), (40, 503137043), (76, 264808970), (95, 211847176), (127, 158468360), (152, 132404485), (190, 105923588), (254, 79234180), (380, 52961794), (508, 39617090), (635, 31693672), (760, 26480897), (1016, 19808545), (1270, 15846836), (2413, 8340440), (2540, 7923418), (4826, 4170220), (5080, 3961709), (9652, 2085110), (12065, 1668088), (19304, 1042555), (24130, 834044), (48260, 417022), (96520, 208511)]