21040552

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{659}}^1$

素因数の和:985

約数の個数: 32

約数和(自身を含む): 42688800

約数和(自身を除く): 21648248

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 307, 614, 659, 1228, 1318, 2456, 2636, 3991, 5272, 7982, 8567, 15964, 17134, 31928, 34268, 68536, 202313, 404626, 809252, 1618504, 2630069, 5260138, 10520276, 21040552]

約数ペア:

[(1, 21040552), (2, 10520276), (4, 5260138), (8, 2630069), (13, 1618504), (26, 809252), (52, 404626), (104, 202313), (307, 68536), (614, 34268), (659, 31928), (1228, 17134), (1318, 15964), (2456, 8567), (2636, 7982), (3991, 5272)]