21715252

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{709}}^1$

素因数の和:776

約数の個数: 48

約数和(自身を含む): 44531200

約数和(自身を除く): 22815948

約数列:

[1, 2, 4, 13, 19, 26, 31, 38, 52, 62, 76, 124, 247, 403, 494, 589, 709, 806, 988, 1178, 1418, 1612, 2356, 2836, 7657, 9217, 13471, 15314, 18434, 21979, 26942, 30628, 36868, 43958, 53884, 87916, 175123, 285727, 350246, 417601, 571454, 700492, 835202, 1142908, 1670404, 5428813, 10857626, 21715252]

約数ペア:

[(1, 21715252), (2, 10857626), (4, 5428813), (13, 1670404), (19, 1142908), (26, 835202), (31, 700492), (38, 571454), (52, 417601), (62, 350246), (76, 285727), (124, 175123), (247, 87916), (403, 53884), (494, 43958), (589, 36868), (709, 30628), (806, 26942), (988, 21979), (1178, 18434), (1418, 15314), (1612, 13471), (2356, 9217), (2836, 7657)]