21654490

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{797}}^1$

素因数の和:847

約数の個数: 64

約数和(自身を含む): 48263040

約数和(自身を除く): 26608550

約数列:

[1, 2, 5, 10, 11, 13, 19, 22, 26, 38, 55, 65, 95, 110, 130, 143, 190, 209, 247, 286, 418, 494, 715, 797, 1045, 1235, 1430, 1594, 2090, 2470, 2717, 3985, 5434, 7970, 8767, 10361, 13585, 15143, 17534, 20722, 27170, 30286, 43835, 51805, 75715, 87670, 103610, 113971, 151430, 166573, 196859, 227942, 333146, 393718, 569855, 832865, 984295, 1139710, 1665730, 1968590, 2165449, 4330898, 10827245, 21654490]

約数ペア:

[(1, 21654490), (2, 10827245), (5, 4330898), (10, 2165449), (11, 1968590), (13, 1665730), (19, 1139710), (22, 984295), (26, 832865), (38, 569855), (55, 393718), (65, 333146), (95, 227942), (110, 196859), (130, 166573), (143, 151430), (190, 113971), (209, 103610), (247, 87670), (286, 75715), (418, 51805), (494, 43835), (715, 30286), (797, 27170), (1045, 20722), (1235, 17534), (1430, 15143), (1594, 13585), (2090, 10361), (2470, 8767), (2717, 7970), (3985, 5434)]