18387580

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{563}}^1$

素因数の和:666

約数の個数: 48

約数和(自身を含む): 40932864

約数和(自身を除く): 22545284

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 71, 92, 115, 142, 230, 284, 355, 460, 563, 710, 1126, 1420, 1633, 2252, 2815, 3266, 5630, 6532, 8165, 11260, 12949, 16330, 25898, 32660, 39973, 51796, 64745, 79946, 129490, 159892, 199865, 258980, 399730, 799460, 919379, 1838758, 3677516, 4596895, 9193790, 18387580]

約数ペア:

[(1, 18387580), (2, 9193790), (4, 4596895), (5, 3677516), (10, 1838758), (20, 919379), (23, 799460), (46, 399730), (71, 258980), (92, 199865), (115, 159892), (142, 129490), (230, 79946), (284, 64745), (355, 51796), (460, 39973), (563, 32660), (710, 25898), (1126, 16330), (1420, 12949), (1633, 11260), (2252, 8165), (2815, 6532), (3266, 5630)]